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68031166 = 277961511
BaseRepresentation
bin1000000111000…
…01001010111110
311202000100012211
410003201022332
5114403444131
610430051034
71454153410
oct403411276
9152010184
1068031166
1135446905
121a949a7a
131112c638
14906c9b0
155e8c5b1
hex40e12be

68031166 has 16 divisors (see below), whose sum is σ = 118103040. Its totient is φ = 28786680.

The previous prime is 68031163. The next prime is 68031169. The reversal of 68031166 is 66113086.

It is an interprime number because it is at equal distance from previous prime (68031163) and next prime (68031169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68031163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29650 + ... + 31861.

It is an arithmetic number, because the mean of its divisors is an integer number (7381440).

Almost surely, 268031166 is an apocalyptic number.

68031166 is a deficient number, since it is larger than the sum of its proper divisors (50071874).

68031166 is a wasteful number, since it uses less digits than its factorization.

68031166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61599.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 68031166 is about 8248.1007510820. The cubic root of 68031166 is about 408.2278579533.

The spelling of 68031166 in words is "sixty-eight million, thirty-one thousand, one hundred sixty-six".

Divisors: 1 2 7 14 79 158 553 1106 61511 123022 430577 861154 4859369 9718738 34015583 68031166