456639644 has 12 divisors (see below), whose sum is σ = 820717464. Its totient is φ = 222148944.

The previous prime is 456639629. The next prime is 456639649. The reversal of 456639644 is 446936654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (456639649) 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, 1542554 + ... + 1542849.

It is an arithmetic number, because the mean of its divisors is an integer number (68393122).

Almost surely, 2^456639644 is an apocalyptic number.

It is an amenable number.

456639644 is a deficient number, since it is larger than the sum of its proper divisors (364077820).

456639644 is a wasteful number, since it uses less digits than its factorization.

456639644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3085444 (or 3085442 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 47.

The square root of 456639644 is about 21369.1282929370. The cubic root of 456639644 is about 770.0599514799.

The spelling of 456639644 in words is "four hundred fifty-six million, six hundred thirty-nine thousand, six hundred forty-four".