764720706 has 16 divisors (see below), whose sum is σ = 1534887648. Its totient is φ = 253999200.

The previous prime is 764720669. The next prime is 764720713. The reversal of 764720706 is 607027467.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225100 + ... + 228471.

It is an arithmetic number, because the mean of its divisors is an integer number (95930478).

Almost surely, 2^764720706 is an apocalyptic number.

764720706 is an abundant number, since it is smaller than the sum of its proper divisors (770166942).

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

764720706 is a wasteful number, since it uses less digits than its factorization.

764720706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453857.

The product of its (nonzero) digits is 98784, while the sum is 39.

The square root of 764720706 is about 27653.5839630237. The cubic root of 764720706 is about 914.4661127453.

The spelling of 764720706 in words is "seven hundred sixty-four million, seven hundred twenty thousand, seven hundred six".