506331816 has 16 divisors (see below), whose sum is σ = 1265829600. Its totient is φ = 168777264.

The previous prime is 506331803. The next prime is 506331823. The reversal of 506331816 is 618133605.

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, 10548556 + ... + 10548603.

It is an arithmetic number, because the mean of its divisors is an integer number (79114350).

Almost surely, 2^506331816 is an apocalyptic number.

It is an amenable number.

506331816 is an abundant number, since it is smaller than the sum of its proper divisors (759497784).

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

506331816 is a wasteful number, since it uses less digits than its factorization.

506331816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21097168 (or 21097164 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 506331816 is about 22501.8180598813. The cubic root of 506331816 is about 797.0368591291.

The spelling of 506331816 in words is "five hundred six million, three hundred thirty-one thousand, eight hundred sixteen".