772318680 has 64 divisors (see below), whose sum is σ = 2647952640. Its totient is φ = 176529792.

The previous prime is 772318661. The next prime is 772318693. The reversal of 772318680 is 86813277.

It is a super-2 number, since 2×772318680² = 1192952286953884800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458874 + ... + 460553.

It is an arithmetic number, because the mean of its divisors is an integer number (41374260).

Almost surely, 2^772318680 is an apocalyptic number.

772318680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

772318680 is an abundant number, since it is smaller than the sum of its proper divisors (1875633960).

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

772318680 is a wasteful number, since it uses less digits than its factorization.

772318680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919448 (or 919444 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 772318680 is about 27790.6221592824. The cubic root of 772318680 is about 917.4847332184.

The spelling of 772318680 in words is "seven hundred seventy-two million, three hundred eighteen thousand, six hundred eighty".