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68501895 = 35711127467
BaseRepresentation
bin1000001010101…
…00000110000111
311202220020221020
410011110012013
5120014030040
610444122223
71461153660
oct405240607
9152806836
1068501895
1135738540
121ab36373
1311265987
149152367
156031cd0
hex4154187

68501895 has 64 divisors (see below), whose sum is σ = 138018816. Its totient is φ = 28183680.

The previous prime is 68501887. The next prime is 68501903. The reversal of 68501895 is 59810586.

It is an interprime number because it is at equal distance from previous prime (68501887) and next prime (68501903).

It is not a de Polignac number, because 68501895 - 23 = 68501887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 146452 + ... + 146918.

It is an arithmetic number, because the mean of its divisors is an integer number (2156544).

Almost surely, 268501895 is an apocalyptic number.

68501895 is an abundant number, since it is smaller than the sum of its proper divisors (69516921).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68501895 is a wasteful number, since it uses less digits than its factorization.

68501895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620.

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 68501895 is about 8276.5871589684. The cubic root of 68501895 is about 409.1672468766.

It can be divided in two parts, 68501 and 895, that added together give a palindrome (69396).

The spelling of 68501895 in words is "sixty-eight million, five hundred one thousand, eight hundred ninety-five".

Divisors: 1 3 5 7 11 15 21 33 35 55 77 105 127 165 231 381 385 467 635 889 1155 1397 1401 1905 2335 2667 3269 4191 4445 5137 6985 7005 9779 9807 13335 15411 16345 20955 25685 29337 35959 48895 49035 59309 77055 107877 146685 177927 179795 296545 415163 539385 652399 889635 1245489 1957197 2075815 3261995 4566793 6227445 9785985 13700379 22833965 68501895