501716664 has 48 divisors (see below), whose sum is σ = 1417899600. Its totient is φ = 159967104.

The previous prime is 501716659. The next prime is 501716711. The reversal of 501716664 is 466617105.

It is a super-2 number, since 2×501716664² = 503439221870577792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149829 + ... + 153140.

It is an arithmetic number, because the mean of its divisors is an integer number (29539575).

Almost surely, 2^501716664 is an apocalyptic number.

It is an amenable number.

501716664 is an abundant number, since it is smaller than the sum of its proper divisors (916182936).

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

501716664 is a wasteful number, since it uses less digits than its factorization.

501716664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303004 (or 302997 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 501716664 is about 22399.0326576841. The cubic root of 501716664 is about 794.6078331604.

The spelling of 501716664 in words is "five hundred one million, seven hundred sixteen thousand, six hundred sixty-four".