86561792 has 22 divisors (see below), whose sum is σ = 173041098. Its totient is φ = 43280384.

The previous prime is 86561767. The next prime is 86561809. The reversal of 86561792 is 29716568.

It can be written as a sum of positive squares in only one way, i.e., 58003456 + 28558336 = 7616^2 + 5344^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41243 + ... + 43290.

Almost surely, 2^86561792 is an apocalyptic number.

It is an amenable number.

86561792 is a deficient number, since it is larger than the sum of its proper divisors (86479306).

86561792 is an equidigital number, since it uses as much as digits as its factorization.

86561792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84553 (or 84535 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 86561792 is about 9303.8589843140. The cubic root of 86561792 is about 442.3595553738.

The spelling of 86561792 in words is "eighty-six million, five hundred sixty-one thousand, seven hundred ninety-two".