63957797 has 2 divisors, whose sum is σ = 63957798. Its totient is φ = 63957796.

The previous prime is 63957787. The next prime is 63957841. The reversal of 63957797 is 79775936.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58967041 + 4990756 = 7679^2 + 2234^2 .

It is a cyclic number.

It is not a de Polignac number, because 63957797 - 2¹⁰ = 63956773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63957767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31978898 + 31978899.

It is an arithmetic number, because the mean of its divisors is an integer number (31978899).

Almost surely, 2^63957797 is an apocalyptic number.

It is an amenable number.

63957797 is a deficient number, since it is larger than the sum of its proper divisors (1).

63957797 is an equidigital number, since it uses as much as digits as its factorization.

63957797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2500470, while the sum is 53.

The square root of 63957797 is about 7997.3618775194. The cubic root of 63957797 is about 399.9120577502.

The spelling of 63957797 in words is "sixty-three million, nine hundred fifty-seven thousand, seven hundred ninety-seven".