464678644 has 12 divisors (see below), whose sum is σ = 813381184. Its totient is φ = 232284024.

The previous prime is 464678639. The next prime is 464678647. The reversal of 464678644 is 446876464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464678647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9427 + ... + 31909.

Almost surely, 2^464678644 is an apocalyptic number.

It is an amenable number.

464678644 is a deficient number, since it is larger than the sum of its proper divisors (348702540).

464678644 is a wasteful number, since it uses less digits than its factorization.

464678644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27654 (or 27652 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 49.

The square root of 464678644 is about 21556.4061012034. The cubic root of 464678644 is about 774.5525792070.

The spelling of 464678644 in words is "four hundred sixty-four million, six hundred seventy-eight thousand, six hundred forty-four".