90568644 has 24 divisors (see below), whose sum is σ = 212056320. Its totient is φ = 30085344.

The previous prime is 90568633. The next prime is 90568651. The reversal of 90568644 is 44686509.

It is a junction number, because it is equal to n+sod(n) for n = 90568596 and 90568605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9364 + ... + 16395.

It is an arithmetic number, because the mean of its divisors is an integer number (8835680).

Almost surely, 2^90568644 is an apocalyptic number.

It is an amenable number.

90568644 is an abundant number, since it is smaller than the sum of its proper divisors (121487676).

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

90568644 is a wasteful number, since it uses less digits than its factorization.

90568644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26059 (or 26057 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 90568644 is about 9516.7559598846. The cubic root of 90568644 is about 449.0823175016.

The spelling of 90568644 in words is "ninety million, five hundred sixty-eight thousand, six hundred forty-four".