813877768 has 32 divisors (see below), whose sum is σ = 1752372000. Its totient is φ = 350472960.

The previous prime is 813877763. The next prime is 813877777. The reversal of 813877768 is 867778318.

It is not an unprimeable number, because it can be changed into a prime (813877763) 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, 241713 + ... + 245056.

It is an arithmetic number, because the mean of its divisors is an integer number (54761625).

Almost surely, 2^813877768 is an apocalyptic number.

813877768 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

813877768 is an abundant number, since it is smaller than the sum of its proper divisors (938494232).

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

813877768 is a wasteful number, since it uses less digits than its factorization.

813877768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486805 (or 486801 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 55.

The square root of 813877768 is about 28528.5430402606. The cubic root of 813877768 is about 933.6549307848.

The spelling of 813877768 in words is "eight hundred thirteen million, eight hundred seventy-seven thousand, seven hundred sixty-eight".