90860816 has 20 divisors (see below), whose sum is σ = 176315724. Its totient is φ = 45360000.

The previous prime is 90860779. The next prime is 90860839. The reversal of 90860816 is 61806809.

It can be written as a sum of positive squares in 2 ways, for example, as 87235600 + 3625216 = 9340^2 + 1904^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90860816.

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, 7166 + ... + 15266.

Almost surely, 2^90860816 is an apocalyptic number.

It is an amenable number.

90860816 is a deficient number, since it is larger than the sum of its proper divisors (85454908).

90860816 is a wasteful number, since it uses less digits than its factorization.

90860816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8810 (or 8804 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 90860816 is about 9532.0939986972. The cubic root of 90860816 is about 449.5647082897.

The spelling of 90860816 in words is "ninety million, eight hundred sixty thousand, eight hundred sixteen".