764066745 has 36 divisors (see below), whose sum is σ = 1434108780. Its totient is φ = 376152192.

The previous prime is 764066729. The next prime is 764066753. The reversal of 764066745 is 547660467.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 38787984 + 725278761 = 6228^2 + 26931^2 .

It is not a de Polignac number, because 764066745 - 2⁴ = 764066729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 764066745.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 42630 + ... + 57839.

It is an arithmetic number, because the mean of its divisors is an integer number (39836355).

Almost surely, 2^764066745 is an apocalyptic number.

It is an amenable number.

764066745 is a deficient number, since it is larger than the sum of its proper divisors (670042035).

764066745 is a wasteful number, since it uses less digits than its factorization.

764066745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100506 (or 100490 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The square root of 764066745 is about 27641.7572704776. The cubic root of 764066745 is about 914.2053658174.

The spelling of 764066745 in words is "seven hundred sixty-four million, sixty-six thousand, seven hundred forty-five".