811064020 has 48 divisors (see below), whose sum is σ = 1930803840. Its totient is φ = 283706496.

The previous prime is 811064017. The next prime is 811064021. The reversal of 811064020 is 20460118.

It is a junction number, because it is equal to n+sod(n) for n = 811063982 and 811064000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811064021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77152 + ... + 87031.

It is an arithmetic number, because the mean of its divisors is an integer number (40225080).

Almost surely, 2^811064020 is an apocalyptic number.

It is an amenable number.

811064020 is an abundant number, since it is smaller than the sum of its proper divisors (1119739820).

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

811064020 is a wasteful number, since it uses less digits than its factorization.

811064020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164224 (or 164222 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 811064020 is about 28479.1857327417. The cubic root of 811064020 is about 932.5777407892.

The spelling of 811064020 in words is "eight hundred eleven million, sixty-four thousand, twenty".