772899720 has 32 divisors (see below), whose sum is σ = 2318699520. Its totient is φ = 206106560.

The previous prime is 772899683. The next prime is 772899731. The reversal of 772899720 is 27998277.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3220296 + ... + 3220535.

It is an arithmetic number, because the mean of its divisors is an integer number (72459360).

Almost surely, 2^772899720 is an apocalyptic number.

It is an amenable number.

772899720 is an abundant number, since it is smaller than the sum of its proper divisors (1545799800).

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

772899720 is a wasteful number, since it uses less digits than its factorization.

772899720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6440845 (or 6440841 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 772899720 is about 27801.0740799704. The cubic root of 772899720 is about 917.7147598947.

The spelling of 772899720 in words is "seven hundred seventy-two million, eight hundred ninety-nine thousand, seven hundred twenty".