626721104407 has 2 divisors, whose sum is σ = 626721104408. Its totient is φ = 626721104406.

The previous prime is 626721104371. The next prime is 626721104519. The reversal of 626721104407 is 704401127626.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-626721104407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 626721104407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (626721101407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313360552203 + 313360552204.

It is an arithmetic number, because the mean of its divisors is an integer number (313360552204).

Almost surely, 2^626721104407 is an apocalyptic number.

626721104407 is a deficient number, since it is larger than the sum of its proper divisors (1).

626721104407 is an equidigital number, since it uses as much as digits as its factorization.

626721104407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 626721104407 in words is "six hundred twenty-six billion, seven hundred twenty-one million, one hundred four thousand, four hundred seven".