811668363 has 12 divisors (see below), whose sum is σ = 1189553064. Its totient is φ = 491920000.

The previous prime is 811668359. The next prime is 811668373. The reversal of 811668363 is 363866118.

It is not a de Polignac number, because 811668363 - 2² = 811668359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (811668373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1117638 + ... + 1118363.

It is an arithmetic number, because the mean of its divisors is an integer number (99129422).

Almost surely, 2^811668363 is an apocalyptic number.

811668363 is a deficient number, since it is larger than the sum of its proper divisors (377884701).

811668363 is a wasteful number, since it uses less digits than its factorization.

811668363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236026 (or 2236015 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 811668363 is about 28489.7940146994. The cubic root of 811668363 is about 932.8093118656.

The spelling of 811668363 in words is "eight hundred eleven million, six hundred sixty-eight thousand, three hundred sixty-three".