769997688 has 32 divisors (see below), whose sum is σ = 1927685760. Its totient is φ = 256307040.

The previous prime is 769997681. The next prime is 769997699. The reversal of 769997688 is 886799967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (769997681) 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, 4618 + ... + 39513.

It is an arithmetic number, because the mean of its divisors is an integer number (60240180).

Almost surely, 2^769997688 is an apocalyptic number.

It is an amenable number.

769997688 is an abundant number, since it is smaller than the sum of its proper divisors (1157688072).

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

769997688 is a wasteful number, since it uses less digits than its factorization.

769997688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44867 (or 44863 counting only the distinct ones).

The product of its digits is 82301184, while the sum is 69.

The square root of 769997688 is about 27748.8321916437. The cubic root of 769997688 is about 916.5647280729.

The spelling of 769997688 in words is "seven hundred sixty-nine million, nine hundred ninety-seven thousand, six hundred eighty-eight".