86668756 has 12 divisors (see below), whose sum is σ = 151920468. Its totient is φ = 43262912.

The previous prime is 86668753. The next prime is 86668759. The reversal of 86668756 is 65786668.

It is an interprime number because it is at equal distance from previous prime (86668753) and next prime (86668759).

It can be written as a sum of positive squares in 2 ways, for example, as 810000 + 85858756 = 900^2 + 9266^2 .

It is a super-2 number, since 2×86668756² = 15022946533175072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86668753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15091 + ... + 20026.

It is an arithmetic number, because the mean of its divisors is an integer number (12660039).

Almost surely, 2^86668756 is an apocalyptic number.

It is an amenable number.

86668756 is a deficient number, since it is larger than the sum of its proper divisors (65251712).

86668756 is a wasteful number, since it uses less digits than its factorization.

86668756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35738 (or 35736 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 52.

The square root of 86668756 is about 9309.6055770371. The cubic root of 86668756 is about 442.5416875830.

The spelling of 86668756 in words is "eighty-six million, six hundred sixty-eight thousand, seven hundred fifty-six".