86659956 has 30 divisors (see below), whose sum is σ = 226547090. Its totient is φ = 28886544.

The previous prime is 86659949. The next prime is 86659981. The reversal of 86659956 is 65995668.

It can be written as a sum of positive squares in only one way, i.e., 62157456 + 24502500 = 7884^2 + 4950^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 133411 + ... + 134058.

Almost surely, 2^86659956 is an apocalyptic number.

It is an amenable number.

86659956 is an abundant number, since it is smaller than the sum of its proper divisors (139887134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86659956 is a wasteful number, since it uses less digits than its factorization.

86659956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267485 (or 267474 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The square root of 86659956 is about 9309.1329349193. The cubic root of 86659956 is about 442.5267091031.

The spelling of 86659956 in words is "eighty-six million, six hundred fifty-nine thousand, nine hundred fifty-six".