628380679 has 2 divisors, whose sum is σ = 628380680. Its totient is φ = 628380678.

The previous prime is 628380659. The next prime is 628380689. The reversal of 628380679 is 976083826.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 628380679 - 2²⁵ = 594826247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628380619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314190339 + 314190340.

It is an arithmetic number, because the mean of its divisors is an integer number (314190340).

Almost surely, 2^628380679 is an apocalyptic number.

628380679 is a deficient number, since it is larger than the sum of its proper divisors (1).

628380679 is an equidigital number, since it uses as much as digits as its factorization.

628380679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 628380679 is about 25067.5223945248. The cubic root of 628380679 is about 856.5267701090.

The spelling of 628380679 in words is "six hundred twenty-eight million, three hundred eighty thousand, six hundred seventy-nine".