628061279 has 2 divisors, whose sum is σ = 628061280. Its totient is φ = 628061278.

The previous prime is 628061261. The next prime is 628061327. The reversal of 628061279 is 972160826.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628061279 - 2²⁰ = 627012703 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628061579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314030639 + 314030640.

It is an arithmetic number, because the mean of its divisors is an integer number (314030640).

Almost surely, 2^628061279 is an apocalyptic number.

628061279 is a deficient number, since it is larger than the sum of its proper divisors (1).

628061279 is an equidigital number, since it uses as much as digits as its factorization.

628061279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 628061279 is about 25061.1507916137. The cubic root of 628061279 is about 856.3816240087.

The spelling of 628061279 in words is "six hundred twenty-eight million, sixty-one thousand, two hundred seventy-nine".