86501636 has 36 divisors (see below), whose sum is σ = 167969844. Its totient is φ = 38937600.

The previous prime is 86501629. The next prime is 86501641. The reversal of 86501636 is 63610568.

It can be written as a sum of positive squares in 6 ways, for example, as 65286400 + 21215236 = 8080^2 + 4606^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86501596 and 86501605.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26156 + ... + 29276.

It is an arithmetic number, because the mean of its divisors is an integer number (4665829).

Almost surely, 2^86501636 is an apocalyptic number.

It is an amenable number.

86501636 is a deficient number, since it is larger than the sum of its proper divisors (81468208).

86501636 is a wasteful number, since it uses less digits than its factorization.

86501636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192 (or 3177 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 86501636 is about 9300.6255703582. The cubic root of 86501636 is about 442.2570592359.

The spelling of 86501636 in words is "eighty-six million, five hundred one thousand, six hundred thirty-six".