501044664 has 16 divisors (see below), whose sum is σ = 1252611720. Its totient is φ = 167014880.

The previous prime is 501044653. The next prime is 501044671. The reversal of 501044664 is 466440105.

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, 10438407 + ... + 10438454.

Almost surely, 2^501044664 is an apocalyptic number.

It is an amenable number.

501044664 is an abundant number, since it is smaller than the sum of its proper divisors (751567056).

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

501044664 is a wasteful number, since it uses less digits than its factorization.

501044664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20876870 (or 20876866 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 501044664 is about 22384.0269835434. The cubic root of 501044664 is about 794.2529083707.

Adding to 501044664 its reverse (466440105), we get a palindrome (967484769).

The spelling of 501044664 in words is "five hundred one million, forty-four thousand, six hundred sixty-four".