63320257 has 48 divisors (see below), whose sum is σ = 91518336. Its totient is φ = 42163200.

The previous prime is 63320251. The next prime is 63320267. The reversal of 63320257 is 75202336.

It is a de Polignac number, because none of the positive numbers 2^k-63320257 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63320251) 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 47 ways as a sum of consecutive naturals, for example, 1038007 + ... + 1038067.

It is an arithmetic number, because the mean of its divisors is an integer number (1906632).

Almost surely, 2^63320257 is an apocalyptic number.

It is an amenable number.

63320257 is a deficient number, since it is larger than the sum of its proper divisors (28198079).

63320257 is a wasteful number, since it uses less digits than its factorization.

63320257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 63320257 is about 7957.4026541328. The cubic root of 63320257 is about 398.5788253868.

The spelling of 63320257 in words is "sixty-three million, three hundred twenty thousand, two hundred fifty-seven".