86636825 has 24 divisors (see below), whose sum is σ = 117688896. Its totient is φ = 62744000.

The previous prime is 86636819. The next prime is 86636831. The reversal of 86636825 is 52863668.

It is an interprime number because it is at equal distance from previous prime (86636819) and next prime (86636831).

It is not a de Polignac number, because 86636825 - 2¹² = 86632729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85019 + ... + 86031.

It is an arithmetic number, because the mean of its divisors is an integer number (4903704).

Almost surely, 2^86636825 is an apocalyptic number.

It is an amenable number.

86636825 is a deficient number, since it is larger than the sum of its proper divisors (31052071).

86636825 is a wasteful number, since it uses less digits than its factorization.

86636825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345 (or 1340 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The square root of 86636825 is about 9307.8904699185. The cubic root of 86636825 is about 442.4873329920.

The spelling of 86636825 in words is "eighty-six million, six hundred thirty-six thousand, eight hundred twenty-five".