501665016 has 32 divisors (see below), whose sum is σ = 1258266240. Its totient is φ = 166674528.

The previous prime is 501665009. The next prime is 501665027. The reversal of 501665016 is 610566105.

It is a congruent number.

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, 26676 + ... + 41411.

It is an arithmetic number, because the mean of its divisors is an integer number (39320820).

Almost surely, 2^501665016 is an apocalyptic number.

It is an amenable number.

501665016 is an abundant number, since it is smaller than the sum of its proper divisors (756601224).

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

501665016 is a wasteful number, since it uses less digits than its factorization.

501665016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68403 (or 68399 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 501665016 is about 22397.8797210807. The cubic root of 501665016 is about 794.5805659021.

The spelling of 501665016 in words is "five hundred one million, six hundred sixty-five thousand, sixteen".