630687919679 has 4 divisors (see below), whose sum is σ = 630691772160. Its totient is φ = 630684067200.

The previous prime is 630687919571. The next prime is 630687919709. The reversal of 630687919679 is 976919786036.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 630687919679 - 2⁸ = 630687919423 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 (630689919679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1669247 + ... + 2011904.

It is an arithmetic number, because the mean of its divisors is an integer number (157672943040).

Almost surely, 2^630687919679 is an apocalyptic number.

630687919679 is a deficient number, since it is larger than the sum of its proper divisors (3852481).

630687919679 is a wasteful number, since it uses less digits than its factorization.

630687919679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852480.

The product of its (nonzero) digits is 185177664, while the sum is 71.

The spelling of 630687919679 in words is "six hundred thirty billion, six hundred eighty-seven million, nine hundred nineteen thousand, six hundred seventy-nine".