63973577 has 2 divisors, whose sum is σ = 63973578. Its totient is φ = 63973576.

The previous prime is 63973573. The next prime is 63973579. The reversal of 63973577 is 77537936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63664441 + 309136 = 7979^2 + 556^2 .

It is a cyclic number.

It is not a de Polignac number, because 63973577 - 2² = 63973573 is a prime.

Together with 63973579, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63973573) 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 as a sum of consecutive naturals, namely, 31986788 + 31986789.

It is an arithmetic number, because the mean of its divisors is an integer number (31986789).

Almost surely, 2^63973577 is an apocalyptic number.

It is an amenable number.

63973577 is a deficient number, since it is larger than the sum of its proper divisors (1).

63973577 is an equidigital number, since it uses as much as digits as its factorization.

63973577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 833490, while the sum is 47.

The square root of 63973577 is about 7998.3483920119. The cubic root of 63973577 is about 399.9449445059.

The spelling of 63973577 in words is "sixty-three million, nine hundred seventy-three thousand, five hundred seventy-seven".