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68268805 = 5112195939
BaseRepresentation
bin1000001000110…
…11001100000101
311202110102012021
410010123030011
5114434100210
610435123141
71456163263
oct404331405
9152412167
1068268805
1135599400
121aa434b1
13111b3857
1490d1433
155ed7bda
hex411b305

68268805 has 24 divisors (see below), whose sum is σ = 94802400. Its totient is φ = 47028960.

The previous prime is 68268799. The next prime is 68268847. The reversal of 68268805 is 50886286.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2k-68268805 is a prime.

It is a super-2 number, since 2×682688052 = 9321259472256050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8526 + ... + 14464.

It is an arithmetic number, because the mean of its divisors is an integer number (3950100).

Almost surely, 268268805 is an apocalyptic number.

It is an amenable number.

68268805 is a deficient number, since it is larger than the sum of its proper divisors (26533595).

68268805 is a wasteful number, since it uses less digits than its factorization.

68268805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5985 (or 5974 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 68268805 is about 8262.4938729175. The cubic root of 68268805 is about 408.7026311513.

The spelling of 68268805 in words is "sixty-eight million, two hundred sixty-eight thousand, eight hundred five".

Divisors: 1 5 11 19 55 95 121 209 605 1045 2299 5939 11495 29695 65329 112841 326645 564205 718619 1241251 3593095 6206255 13653761 68268805