811358680 has 32 divisors (see below), whose sum is σ = 1991517840. Its totient is φ = 295039360.

The previous prime is 811358663. The next prime is 811358687. The reversal of 811358680 is 86853118.

It is a super-2 number, since 2×811358680² = 1316605815222684800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811358687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921559 + ... + 922438.

Almost surely, 2^811358680 is an apocalyptic number.

It is an amenable number.

811358680 is an abundant number, since it is smaller than the sum of its proper divisors (1180159160).

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

811358680 is a wasteful number, since it uses less digits than its factorization.

811358680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844019 (or 1844015 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 811358680 is about 28484.3585148060. The cubic root of 811358680 is about 932.6906624491.

The spelling of 811358680 in words is "eight hundred eleven million, three hundred fifty-eight thousand, six hundred eighty".