63406944 has 36 divisors (see below), whose sum is σ = 180314316. Its totient is φ = 21135552.

The previous prime is 63406943. The next prime is 63406949. The reversal of 63406944 is 44960436.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 63406899 and 63406908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63406943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109794 + ... + 110369.

It is an arithmetic number, because the mean of its divisors is an integer number (5008731).

Almost surely, 2^63406944 is an apocalyptic number.

It is an amenable number.

63406944 is an abundant number, since it is smaller than the sum of its proper divisors (116907372).

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

63406944 is a wasteful number, since it uses less digits than its factorization.

63406944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220179 (or 220168 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 63406944 is about 7962.8477318105. The cubic root of 63406944 is about 398.7606305411.

The spelling of 63406944 in words is "sixty-three million, four hundred six thousand, nine hundred forty-four".