811566496 has 24 divisors (see below), whose sum is σ = 1720677924. Its totient is φ = 374568960.

The previous prime is 811566487. The next prime is 811566499. The reversal of 811566496 is 694665118.

It can be written as a sum of positive squares in 2 ways, for example, as 774842896 + 36723600 = 27836^2 + 6060^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (811566499) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 975025 + ... + 975856.

Almost surely, 2^811566496 is an apocalyptic number.

It is an amenable number.

811566496 is an abundant number, since it is smaller than the sum of its proper divisors (909111428).

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

811566496 is a wasteful number, since it uses less digits than its factorization.

811566496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950904 (or 1950896 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 811566496 is about 28488.0061780392. The cubic root of 811566496 is about 932.7702867063.

The spelling of 811566496 in words is "eight hundred eleven million, five hundred sixty-six thousand, four hundred ninety-six".