63957577 has 2 divisors, whose sum is σ = 63957578. Its totient is φ = 63957576.

The previous prime is 63957547. The next prime is 63957583. The reversal of 63957577 is 77575936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60512841 + 3444736 = 7779^2 + 1856^2 .

It is a cyclic number.

It is not a de Polignac number, because 63957577 - 2⁷ = 63957449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63957577.

It is not a weakly prime, because it can be changed into another prime (63957527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31978788 + 31978789.

It is an arithmetic number, because the mean of its divisors is an integer number (31978789).

Almost surely, 2^63957577 is an apocalyptic number.

It is an amenable number.

63957577 is a deficient number, since it is larger than the sum of its proper divisors (1).

63957577 is an equidigital number, since it uses as much as digits as its factorization.

63957577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1389150, while the sum is 49.

The square root of 63957577 is about 7997.3481229718. The cubic root of 63957577 is about 399.9115992147.

The spelling of 63957577 in words is "sixty-three million, nine hundred fifty-seven thousand, five hundred seventy-seven".