772742691 has 36 divisors (see below), whose sum is σ = 1317847752. Its totient is φ = 434960064.

The previous prime is 772742657. The next prime is 772742713. The reversal of 772742691 is 196247277.

772742691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 772742691 - 2⁶ = 772742627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (772742291) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16471 + ... + 42623.

It is an arithmetic number, because the mean of its divisors is an integer number (36606882).

Almost surely, 2^772742691 is an apocalyptic number.

772742691 is a deficient number, since it is larger than the sum of its proper divisors (545105061).

772742691 is a wasteful number, since it uses less digits than its factorization.

772742691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26240 (or 26230 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 772742691 is about 27798.2497830349. The cubic root of 772742691 is about 917.6526053927.

The spelling of 772742691 in words is "seven hundred seventy-two million, seven hundred forty-two thousand, six hundred ninety-one".