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68090165 = 5111395231
BaseRepresentation
bin1000000111011…
…11100100110101
311202010100010222
410003233210311
5114412341130
610431224125
71454520413
oct403574465
9152110128
1068090165
1135487170
121a978045
1311150450
1490862b3
155e9ece5
hex40ef935

68090165 has 16 divisors (see below), whose sum is σ = 95993856. Its totient is φ = 45710400.

The previous prime is 68090159. The next prime is 68090177. The reversal of 68090165 is 56109086.

It is not a de Polignac number, because 68090165 - 24 = 68090149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46901 + ... + 48330.

It is an arithmetic number, because the mean of its divisors is an integer number (5999616).

Almost surely, 268090165 is an apocalyptic number.

68090165 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68090165 is a deficient number, since it is larger than the sum of its proper divisors (27903691).

68090165 is a wasteful number, since it uses less digits than its factorization.

68090165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95260.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 68090165 is about 8251.6764963249. The cubic root of 68090165 is about 408.3458336679.

The spelling of 68090165 in words is "sixty-eight million, ninety thousand, one hundred sixty-five".

Divisors: 1 5 11 13 55 65 143 715 95231 476155 1047541 1238003 5237705 6190015 13618033 68090165