864736464 has 20 divisors (see below), whose sum is σ = 2233902656. Its totient is φ = 288245472.

The previous prime is 864736403. The next prime is 864736487. The reversal of 864736464 is 464637468.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 18015343 = 864736464 / (8 + 6 + 4 + 7 + 3 + 6 + 4 + 6 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9007624 + ... + 9007719.

Almost surely, 2^864736464 is an apocalyptic number.

It is an amenable number.

864736464 is an abundant number, since it is smaller than the sum of its proper divisors (1369166192).

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

864736464 is a wasteful number, since it uses less digits than its factorization.

864736464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18015354 (or 18015348 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 48.

The square root of 864736464 is about 29406.4017519995. The cubic root of 864736464 is about 952.7111709309.

The spelling of 864736464 in words is "eight hundred sixty-four million, seven hundred thirty-six thousand, four hundred sixty-four".