63401601 has 4 divisors (see below), whose sum is σ = 84535472. Its totient is φ = 42267732.

The previous prime is 63401581. The next prime is 63401623. The reversal of 63401601 is 10610436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 63401601 - 2⁷ = 63401473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63408601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10566931 + ... + 10566936.

It is an arithmetic number, because the mean of its divisors is an integer number (21133868).

Almost surely, 2^63401601 is an apocalyptic number.

It is an amenable number.

63401601 is a deficient number, since it is larger than the sum of its proper divisors (21133871).

63401601 is a wasteful number, since it uses less digits than its factorization.

63401601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21133870.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 63401601 is about 7962.5122291900. The cubic root of 63401601 is about 398.7494296759.

The spelling of 63401601 in words is "sixty-three million, four hundred one thousand, six hundred one".