63916679 has 6 divisors (see below), whose sum is σ = 64370880. Its totient is φ = 63465656.

The previous prime is 63916631. The next prime is 63916681. The reversal of 63916679 is 97661936.

It is a happy number.

It is not a de Polignac number, because 63916679 - 2⁸ = 63916423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63913679) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20762 + ... + 23640.

It is an arithmetic number, because the mean of its divisors is an integer number (10728480).

Almost surely, 2^63916679 is an apocalyptic number.

63916679 is a deficient number, since it is larger than the sum of its proper divisors (454201).

63916679 is an equidigital number, since it uses as much as digits as its factorization.

63916679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3177 (or 3028 counting only the distinct ones).

The product of its digits is 367416, while the sum is 47.

The square root of 63916679 is about 7994.7907414766. The cubic root of 63916679 is about 399.8263391991.

The spelling of 63916679 in words is "sixty-three million, nine hundred sixteen thousand, six hundred seventy-nine".