628914679 has 2 divisors, whose sum is σ = 628914680. Its totient is φ = 628914678.

The previous prime is 628914607. The next prime is 628914709. The reversal of 628914679 is 976419826.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 628914679 - 2⁷ = 628914551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628912679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314457339 + 314457340.

It is an arithmetic number, because the mean of its divisors is an integer number (314457340).

Almost surely, 2^628914679 is an apocalyptic number.

628914679 is a deficient number, since it is larger than the sum of its proper divisors (1).

628914679 is an equidigital number, since it uses as much as digits as its factorization.

628914679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 52.

The square root of 628914679 is about 25078.1713647546. The cubic root of 628914679 is about 856.7693278500.

The spelling of 628914679 in words is "six hundred twenty-eight million, nine hundred fourteen thousand, six hundred seventy-nine".