86500816 has 20 divisors (see below), whose sum is σ = 171684324. Its totient is φ = 42195200.

The previous prime is 86500793. The next prime is 86500829. The reversal of 86500816 is 61800568.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3763600 + 82737216 = 1940^2 + 9096^2 .

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, 65275 + ... + 66586.

Almost surely, 2^86500816 is an apocalyptic number.

It is an amenable number.

86500816 is a deficient number, since it is larger than the sum of its proper divisors (85183508).

86500816 is a wasteful number, since it uses less digits than its factorization.

86500816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131910 (or 131904 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 86500816 is about 9300.5814871975. The cubic root of 86500816 is about 442.2556617597.

The spelling of 86500816 in words is "eighty-six million, five hundred thousand, eight hundred sixteen".