86436816 has 20 divisors (see below), whose sum is σ = 223295232. Its totient is φ = 28812256.

The previous prime is 86436809. The next prime is 86436851. The reversal of 86436816 is 61863468.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900336 + ... + 900431.

Almost surely, 2^86436816 is an apocalyptic number.

It is an amenable number.

86436816 is an abundant number, since it is smaller than the sum of its proper divisors (136858416).

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

86436816 is a wasteful number, since it uses less digits than its factorization.

86436816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800778 (or 1800772 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 86436816 is about 9297.1402054610. The cubic root of 86436816 is about 442.1465631903.

The spelling of 86436816 in words is "eighty-six million, four hundred thirty-six thousand, eight hundred sixteen".