764477643 has 8 divisors (see below), whose sum is σ = 1027330048. Its totient is φ = 505638504.

The previous prime is 764477603. The next prime is 764477647. The reversal of 764477643 is 346774467.

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

It is not a de Polignac number, because 764477643 - 2⁶ = 764477579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 764477592 and 764477601.

It is not an unprimeable number, because it can be changed into a prime (764477647) 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, 1002871 + ... + 1003632.

It is an arithmetic number, because the mean of its divisors is an integer number (128416256).

Almost surely, 2^764477643 is an apocalyptic number.

764477643 is a deficient number, since it is larger than the sum of its proper divisors (262852405).

764477643 is a wasteful number, since it uses less digits than its factorization.

764477643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006633.

The product of its digits is 2370816, while the sum is 48.

The square root of 764477643 is about 27649.1888307777. The cubic root of 764477643 is about 914.3692161796.

The spelling of 764477643 in words is "seven hundred sixty-four million, four hundred seventy-seven thousand, six hundred forty-three".