86636811 has 32 divisors (see below), whose sum is σ = 125653248. Its totient is φ = 52899840.

The previous prime is 86636779. The next prime is 86636819. The reversal of 86636811 is 11863668.

It is not a de Polignac number, because 86636811 - 2⁵ = 86636779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86636811.

It is not an unprimeable number, because it can be changed into a prime (86636819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 410496 + ... + 410706.

It is an arithmetic number, because the mean of its divisors is an integer number (3926664).

Almost surely, 2^86636811 is an apocalyptic number.

86636811 is a deficient number, since it is larger than the sum of its proper divisors (39016437).

86636811 is a wasteful number, since it uses less digits than its factorization.

86636811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411.

The product of its digits is 41472, while the sum is 39.

The square root of 86636811 is about 9307.8897178684. The cubic root of 86636811 is about 442.4873091576.

The spelling of 86636811 in words is "eighty-six million, six hundred thirty-six thousand, eight hundred eleven".