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68495975 = 5217161167
BaseRepresentation
bin1000001010100…
…10101001100111
311202212221210222
410011102221213
5120013332400
610444034555
71461130502
oct405225147
9152787728
1068495975
1135734049
121ab32a5b
1311263082
149150139
156030185
hex4152a67

68495975 has 12 divisors (see below), whose sum is σ = 89931744. Its totient is φ = 51573120.

The previous prime is 68495963. The next prime is 68495989. The reversal of 68495975 is 57959486.

It is not a de Polignac number, because 68495975 - 28 = 68495719 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 11 ways as a sum of consecutive naturals, for example, 80159 + ... + 81008.

It is an arithmetic number, because the mean of its divisors is an integer number (7494312).

Almost surely, 268495975 is an apocalyptic number.

68495975 is a deficient number, since it is larger than the sum of its proper divisors (21435769).

68495975 is a wasteful number, since it uses less digits than its factorization.

68495975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161194 (or 161189 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 53.

The square root of 68495975 is about 8276.2295159088. The cubic root of 68495975 is about 409.1554596606.

The spelling of 68495975 in words is "sixty-eight million, four hundred ninety-five thousand, nine hundred seventy-five".

Divisors: 1 5 17 25 85 425 161167 805835 2739839 4029175 13699195 68495975