626374057 has 2 divisors, whose sum is σ = 626374058. Its totient is φ = 626374056.

The previous prime is 626374037. The next prime is 626374117. The reversal of 626374057 is 750473626.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403648281 + 222725776 = 20091^2 + 14924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-626374057 is a prime.

It is not a weakly prime, because it can be changed into another prime (626374037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313187028 + 313187029.

It is an arithmetic number, because the mean of its divisors is an integer number (313187029).

Almost surely, 2^626374057 is an apocalyptic number.

It is an amenable number.

626374057 is a deficient number, since it is larger than the sum of its proper divisors (1).

626374057 is an equidigital number, since it uses as much as digits as its factorization.

626374057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 626374057 is about 25027.4660523194. The cubic root of 626374057 is about 855.6140759138.

The spelling of 626374057 in words is "six hundred twenty-six million, three hundred seventy-four thousand, fifty-seven".