501616836 has 36 divisors (see below), whose sum is σ = 1449116032. Its totient is φ = 143319024.

The previous prime is 501616811. The next prime is 501616849. The reversal of 501616836 is 638616105.

It is a happy number.

501616836 is a `hidden beast` number, since 5 + 0 + 1 + 616 + 8 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 501616836.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 995020 + ... + 995523.

Almost surely, 2^501616836 is an apocalyptic number.

It is an amenable number.

501616836 is an abundant number, since it is smaller than the sum of its proper divisors (947499196).

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

501616836 is a wasteful number, since it uses less digits than its factorization.

501616836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990560 (or 1990555 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 501616836 is about 22396.8041470206. The cubic root of 501616836 is about 794.5551278667. Note that the first 3 decimals are identical.

The spelling of 501616836 in words is "five hundred one million, six hundred sixteen thousand, eight hundred thirty-six".