63506944 has 40 divisors (see below), whose sum is σ = 128750688. Its totient is φ = 31288320.

The previous prime is 63506939. The next prime is 63506957. The reversal of 63506944 is 44960536.

It is a happy 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, 35479 + ... + 37225.

Almost surely, 2^63506944 is an apocalyptic number.

63506944 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63506944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64375344).

63506944 is an abundant number, since it is smaller than the sum of its proper divisors (65243744).

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

63506944 is an equidigital number, since it uses as much as digits as its factorization.

63506944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836 (or 1820 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 63506944 is about 7969.1244186548. The cubic root of 63506944 is about 398.9701508021.

The spelling of 63506944 in words is "sixty-three million, five hundred six thousand, nine hundred forty-four".