63320144 has 10 divisors (see below), whose sum is σ = 122682810. Its totient is φ = 31660064.

The previous prime is 63320111. The next prime is 63320149. The reversal of 63320144 is 44102336.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 38440000 + 24880144 = 6200^2 + 4988^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63320149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1978739 + ... + 1978770.

It is an arithmetic number, because the mean of its divisors is an integer number (12268281).

Almost surely, 2^63320144 is an apocalyptic number.

It is an amenable number.

63320144 is a deficient number, since it is larger than the sum of its proper divisors (59362666).

63320144 is a wasteful number, since it uses less digits than its factorization.

63320144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957517 (or 3957511 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 63320144 is about 7957.3955538229. The cubic root of 63320144 is about 398.5785882882.

The spelling of 63320144 in words is "sixty-three million, three hundred twenty thousand, one hundred forty-four".