769664607 has 4 divisors (see below), whose sum is σ = 1026219480. Its totient is φ = 513109736.

The previous prime is 769664593. The next prime is 769664627. The reversal of 769664607 is 706466967.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 769664607 - 2⁴ = 769664591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 769664607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (769664627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128277432 + ... + 128277437.

It is an arithmetic number, because the mean of its divisors is an integer number (256554870).

Almost surely, 2^769664607 is an apocalyptic number.

769664607 is a deficient number, since it is larger than the sum of its proper divisors (256554873).

769664607 is a wasteful number, since it uses less digits than its factorization.

769664607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256554872.

The product of its (nonzero) digits is 2286144, while the sum is 51.

The square root of 769664607 is about 27742.8298304265. The cubic root of 769664607 is about 916.4325483137.

The spelling of 769664607 in words is "seven hundred sixty-nine million, six hundred sixty-four thousand, six hundred seven".