63907901 has 2 divisors, whose sum is σ = 63907902. Its totient is φ = 63907900.

The previous prime is 63907873. The next prime is 63907903. The reversal of 63907901 is 10970936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56235001 + 7672900 = 7499^2 + 2770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63907901 is a prime.

Together with 63907903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63907903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31953950 + 31953951.

It is an arithmetic number, because the mean of its divisors is an integer number (31953951).

Almost surely, 2^63907901 is an apocalyptic number.

It is an amenable number.

63907901 is a deficient number, since it is larger than the sum of its proper divisors (1).

63907901 is an equidigital number, since it uses as much as digits as its factorization.

63907901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 63907901 is about 7994.2417401527. The cubic root of 63907901 is about 399.8080349716.

The spelling of 63907901 in words is "sixty-three million, nine hundred seven thousand, nine hundred one".