811636496 has 20 divisors (see below), whose sum is σ = 1715504784. Its totient is φ = 368925600.

The previous prime is 811636493. The next prime is 811636517. The reversal of 811636496 is 694636118.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (811636493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2305610 + ... + 2305961.

Almost surely, 2^811636496 is an apocalyptic number.

It is an amenable number.

811636496 is an abundant number, since it is smaller than the sum of its proper divisors (903868288).

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

811636496 is a wasteful number, since it uses less digits than its factorization.

811636496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4611590 (or 4611584 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 811636496 is about 28489.2347387570. The cubic root of 811636496 is about 932.7971039965.

The spelling of 811636496 in words is "eight hundred eleven million, six hundred thirty-six thousand, four hundred ninety-six".