769644312 has 32 divisors (see below), whose sum is σ = 1931791680. Its totient is φ = 255524000.

The previous prime is 769644287. The next prime is 769644319. The reversal of 769644312 is 213446967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (769644319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57858 + ... + 69905.

It is an arithmetic number, because the mean of its divisors is an integer number (60368490).

Almost surely, 2^769644312 is an apocalyptic number.

It is an amenable number.

769644312 is an abundant number, since it is smaller than the sum of its proper divisors (1162147368).

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

769644312 is a wasteful number, since it uses less digits than its factorization.

769644312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128023 (or 128019 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 769644312 is about 27742.4640578302. The cubic root of 769644312 is about 916.4244932198.

The spelling of 769644312 in words is "seven hundred sixty-nine million, six hundred forty-four thousand, three hundred twelve".