90656644 has 12 divisors (see below), whose sum is σ = 170853004. Its totient is φ = 41841504.

The previous prime is 90656633. The next prime is 90656651. The reversal of 90656644 is 44665609.

It can be written as a sum of positive squares in 2 ways, for example, as 12334144 + 78322500 = 3512^2 + 8850^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 90656597 and 90656606.

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, 871647 + ... + 871750.

Almost surely, 2^90656644 is an apocalyptic number.

It is an amenable number.

90656644 is a deficient number, since it is larger than the sum of its proper divisors (80196360).

90656644 is a wasteful number, since it uses less digits than its factorization.

90656644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743414 (or 1743412 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 90656644 is about 9521.3782615754. The cubic root of 90656644 is about 449.2277190064.

The spelling of 90656644 in words is "ninety million, six hundred fifty-six thousand, six hundred forty-four".