63980961 has 16 divisors (see below), whose sum is σ = 97962240. Its totient is φ = 36735120.

The previous prime is 63980933. The next prime is 63980977. The reversal of 63980961 is 16908936.

It is not a de Polignac number, because 63980961 - 2¹⁵ = 63948193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63980981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50395 + ... + 51648.

It is an arithmetic number, because the mean of its divisors is an integer number (6122640).

Almost surely, 2^63980961 is an apocalyptic number.

It is an amenable number.

63980961 is a deficient number, since it is larger than the sum of its proper divisors (33981279).

63980961 is a wasteful number, since it uses less digits than its factorization.

63980961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102076.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 63980961 is about 7998.8099739899. The cubic root of 63980961 is about 399.9603314828.

The spelling of 63980961 in words is "sixty-three million, nine hundred eighty thousand, nine hundred sixty-one".