628810457 has 12 divisors (see below), whose sum is σ = 702537264. Its totient is φ = 557867520.

The previous prime is 628810439. The next prime is 628810489. The reversal of 628810457 is 754018826.

It is not a de Polignac number, because 628810457 - 2⁸ = 628810201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628810157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 544793 + ... + 545945.

It is an arithmetic number, because the mean of its divisors is an integer number (58544772).

Almost surely, 2^628810457 is an apocalyptic number.

It is an amenable number.

628810457 is a deficient number, since it is larger than the sum of its proper divisors (73726807).

628810457 is an equidigital number, since it uses as much as digits as its factorization.

628810457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360 (or 1207 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 628810457 is about 25076.0933360841. The cubic root of 628810457 is about 856.7219980882.

The spelling of 628810457 in words is "six hundred twenty-eight million, eight hundred ten thousand, four hundred fifty-seven".