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68162087 = 7223311951
BaseRepresentation
bin1000001000000…
…01001000100111
311202020222210202
410010001020213
5114422141322
610432541115
71455240200
oct404011047
9152228722
1068162087
1135526204
121a9b179b
13111770c6
1490a45a7
155eb6292
hex4101227

68162087 has 24 divisors (see below), whose sum is σ = 85450752. Its totient is φ = 54054000.

The previous prime is 68162057. The next prime is 68162119. The reversal of 68162087 is 78026186.

It is not a de Polignac number, because 68162087 - 26 = 68162023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68162087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68162057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33962 + ... + 35912.

It is an arithmetic number, because the mean of its divisors is an integer number (3560448).

Almost surely, 268162087 is an apocalyptic number.

68162087 is a deficient number, since it is larger than the sum of its proper divisors (17288665).

68162087 is a wasteful number, since it uses less digits than its factorization.

68162087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019 (or 2012 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 68162087 is about 8256.0333696031. The cubic root of 68162087 is about 408.4895583625.

The spelling of 68162087 in words is "sixty-eight million, one hundred sixty-two thousand, eighty-seven".

Divisors: 1 7 23 31 49 161 217 713 1127 1519 1951 4991 13657 34937 44873 60481 95599 314111 423367 1391063 2198777 2963569 9737441 68162087