900664 has 8 divisors (see below), whose sum is σ = 1688760. Its totient is φ = 450328.

The previous prime is 900659. The next prime is 900671. The reversal of 900664 is 466009.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×900664² = 1622391281792, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56284 + ... + 56299.

It is an arithmetic number, because the mean of its divisors is an integer number (211095).

2⁹⁰⁰⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

900664 is a deficient number, since it is larger than the sum of its proper divisors (788096).

900664 is a wasteful number, since it uses less digits than its factorization.

900664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112589 (or 112585 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 900664 is about 949.0331922541. The cubic root of 900664 is about 96.5726765108.

The spelling of 900664 in words is "nine hundred thousand, six hundred sixty-four".