626667479 has 2 divisors, whose sum is σ = 626667480. Its totient is φ = 626667478.

The previous prime is 626667463. The next prime is 626667523. The reversal of 626667479 is 974766626.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 626667479 - 2⁴ = 626667463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 626667479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (626660479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313333739 + 313333740.

It is an arithmetic number, because the mean of its divisors is an integer number (313333740).

Almost surely, 2^626667479 is an apocalyptic number.

626667479 is a deficient number, since it is larger than the sum of its proper divisors (1).

626667479 is an equidigital number, since it uses as much as digits as its factorization.

626667479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 53.

The square root of 626667479 is about 25033.3273657339. The cubic root of 626667479 is about 855.7476578625.

The spelling of 626667479 in words is "six hundred twenty-six million, six hundred sixty-seven thousand, four hundred seventy-nine".