764076865 has 8 divisors (see below), whose sum is σ = 918003240. Its totient is φ = 610520832.

The previous prime is 764076853. The next prime is 764076869. The reversal of 764076865 is 568670467.

It can be written as a sum of positive squares in 4 ways, for example, as 51984 + 764024881 = 228^2 + 27641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 764076865 - 2⁷ = 764076737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (764076869) 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, 88024 + ... + 96313.

It is an arithmetic number, because the mean of its divisors is an integer number (114750405).

Almost surely, 2^764076865 is an apocalyptic number.

It is an amenable number.

764076865 is a deficient number, since it is larger than the sum of its proper divisors (153926375).

764076865 is a wasteful number, since it uses less digits than its factorization.

764076865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185171.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The square root of 764076865 is about 27641.9403262506. The cubic root of 764076865 is about 914.2094019907.

The spelling of 764076865 in words is "seven hundred sixty-four million, seventy-six thousand, eight hundred sixty-five".