63465644 has 18 divisors (see below), whose sum is σ = 121262652. Its totient is φ = 28824000.

The previous prime is 63465637. The next prime is 63465667. The reversal of 63465644 is 44656436.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 63465598 and 63465607.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52244 + ... + 53444.

It is an arithmetic number, because the mean of its divisors is an integer number (6736814).

Almost surely, 2^63465644 is an apocalyptic number.

It is an amenable number.

63465644 is a deficient number, since it is larger than the sum of its proper divisors (57797008).

63465644 is a wasteful number, since it uses less digits than its factorization.

63465644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417 (or 1214 counting only the distinct ones).

The product of its digits is 207360, while the sum is 38.

The square root of 63465644 is about 7966.5327464337. The cubic root of 63465644 is about 398.8836456140.

The spelling of 63465644 in words is "sixty-three million, four hundred sixty-five thousand, six hundred forty-four".