63940944 has 80 divisors (see below), whose sum is σ = 176560128. Its totient is φ = 19869696.

The previous prime is 63940931. The next prime is 63940963. The reversal of 63940944 is 44904936.

It is a super-2 number, since 2×63940944² = 8176888639222272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103324 + ... + 103940.

Almost surely, 2^63940944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63940944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88280064).

63940944 is an abundant number, since it is smaller than the sum of its proper divisors (112619184).

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

63940944 is a wasteful number, since it uses less digits than its factorization.

63940944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 63940944 is about 7996.3081481394. The cubic root of 63940944 is about 399.8769288043.

The spelling of 63940944 in words is "sixty-three million, nine hundred forty thousand, nine hundred forty-four".