63904401 has 12 divisors (see below), whose sum is σ = 100698000. Its totient is φ = 38729880.

The previous prime is 63904381. The next prime is 63904453. The reversal of 63904401 is 10440936.

It is not a de Polignac number, because 63904401 - 2¹⁰ = 63903377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63904471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 322651 + ... + 322848.

It is an arithmetic number, because the mean of its divisors is an integer number (8391500).

Almost surely, 2^63904401 is an apocalyptic number.

It is an amenable number.

63904401 is a deficient number, since it is larger than the sum of its proper divisors (36793599).

63904401 is a wasteful number, since it uses less digits than its factorization.

63904401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645516 (or 645513 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 63904401 is about 7994.0228295896. The cubic root of 63904401 is about 399.8007361680.

The spelling of 63904401 in words is "sixty-three million, nine hundred four thousand, four hundred one".