814725636 has 48 divisors (see below), whose sum is σ = 1945122816. Its totient is φ = 265297824.

The previous prime is 814725599. The next prime is 814725641. The reversal of 814725636 is 636527418.

It is an alternating number because its digits alternate between even and odd.

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 15 ways as a sum of consecutive naturals, for example, 409035 + ... + 411021.

It is an arithmetic number, because the mean of its divisors is an integer number (40523392).

Almost surely, 2^814725636 is an apocalyptic number.

It is an amenable number.

814725636 is an abundant number, since it is smaller than the sum of its proper divisors (1130397180).

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

814725636 is a wasteful number, since it uses less digits than its factorization.

814725636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768 (or 2766 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 814725636 is about 28543.3991668827. The cubic root of 814725636 is about 933.9790340825.

The spelling of 814725636 in words is "eight hundred fourteen million, seven hundred twenty-five thousand, six hundred thirty-six".