63244644 has 12 divisors (see below), whose sum is σ = 147570864. Its totient is φ = 21081544.

The previous prime is 63244639. The next prime is 63244651. The reversal of 63244644 is 44644236.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2635182 + ... + 2635205.

It is an arithmetic number, because the mean of its divisors is an integer number (12297572).

Almost surely, 2^63244644 is an apocalyptic number.

It is an amenable number.

63244644 is an abundant number, since it is smaller than the sum of its proper divisors (84326220).

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

63244644 is a wasteful number, since it uses less digits than its factorization.

63244644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5270394 (or 5270392 counting only the distinct ones).

The product of its digits is 55296, while the sum is 33.

The square root of 63244644 is about 7952.6501243296. The cubic root of 63244644 is about 398.4201097493.

The spelling of 63244644 in words is "sixty-three million, two hundred forty-four thousand, six hundred forty-four".