813768867 has 12 divisors (see below), whose sum is σ = 1181536824. Its totient is φ = 539700480.

The previous prime is 813768863. The next prime is 813768871. The reversal of 813768867 is 768867318.

It is an interprime number because it is at equal distance from previous prime (813768863) and next prime (813768871).

It is not a de Polignac number, because 813768867 - 2² = 813768863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (813768863) 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, 232509 + ... + 235982.

It is an arithmetic number, because the mean of its divisors is an integer number (98461402).

Almost surely, 2^813768867 is an apocalyptic number.

813768867 is a deficient number, since it is larger than the sum of its proper divisors (367767957).

813768867 is a wasteful number, since it uses less digits than its factorization.

813768867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468690 (or 468687 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 813768867 is about 28526.6343440652. The cubic root of 813768867 is about 933.6132863288.

The spelling of 813768867 in words is "eight hundred thirteen million, seven hundred sixty-eight thousand, eight hundred sixty-seven".