630670457 has 2 divisors, whose sum is σ = 630670458. Its totient is φ = 630670456.

The previous prime is 630670441. The next prime is 630670463. The reversal of 630670457 is 754076036.

630670457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608164921 + 22505536 = 24661^2 + 4744^2 .

It is a cyclic number.

It is not a de Polignac number, because 630670457 - 2⁴ = 630670441 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 630670457.

It is not a weakly prime, because it can be changed into another prime (630670757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315335228 + 315335229.

It is an arithmetic number, because the mean of its divisors is an integer number (315335229).

Almost surely, 2^630670457 is an apocalyptic number.

It is an amenable number.

630670457 is a deficient number, since it is larger than the sum of its proper divisors (1).

630670457 is an equidigital number, since it uses as much as digits as its factorization.

630670457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 630670457 is about 25113.1530676656. The cubic root of 630670457 is about 857.5658847739.

The spelling of 630670457 in words is "six hundred thirty million, six hundred seventy thousand, four hundred fifty-seven".