63145616 has 20 divisors (see below), whose sum is σ = 129541932. Its totient is φ = 29715456.

The previous prime is 63145609. The next prime is 63145619. The reversal of 63145616 is 61654136.

It can be written as a sum of positive squares in 2 ways, for example, as 54169600 + 8976016 = 7360^2 + 2996^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (63145619) 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 3 ways as a sum of consecutive naturals, for example, 115805 + ... + 116348.

Almost surely, 2^63145616 is an apocalyptic number.

It is an amenable number.

63145616 is an abundant number, since it is smaller than the sum of its proper divisors (66396316).

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

63145616 is a wasteful number, since it uses less digits than its factorization.

63145616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232178 (or 232172 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 63145616 is about 7946.4215845876. The cubic root of 63145616 is about 398.2120533579.

The spelling of 63145616 in words is "sixty-three million, one hundred forty-five thousand, six hundred sixteen".