63912965 has 16 divisors (see below), whose sum is σ = 78463728. Its totient is φ = 49959936.

The previous prime is 63912943. The next prime is 63912967. The reversal of 63912965 is 56921936.

63912965 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 8 ways, for example, as 10666756 + 53246209 = 3266^2 + 7297^2 .

It is a cyclic number.

It is not a de Polignac number, because 63912965 - 2¹⁰ = 63911941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63912967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114467 + ... + 115023.

It is an arithmetic number, because the mean of its divisors is an integer number (4903983).

Almost surely, 2^63912965 is an apocalyptic number.

It is an amenable number.

63912965 is a deficient number, since it is larger than the sum of its proper divisors (14550763).

63912965 is a wasteful number, since it uses less digits than its factorization.

63912965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048.

The product of its digits is 87480, while the sum is 41.

The square root of 63912965 is about 7994.5584618539. The cubic root of 63912965 is about 399.8185948262.

The spelling of 63912965 in words is "sixty-three million, nine hundred twelve thousand, nine hundred sixty-five".