628407007447 has 2 divisors, whose sum is σ = 628407007448. Its totient is φ = 628407007446.

The previous prime is 628407007381. The next prime is 628407007499. The reversal of 628407007447 is 744700704826.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628407007447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 628407007447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628407004447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314203503723 + 314203503724.

It is an arithmetic number, because the mean of its divisors is an integer number (314203503724).

Almost surely, 2^628407007447 is an apocalyptic number.

628407007447 is a deficient number, since it is larger than the sum of its proper divisors (1).

628407007447 is an equidigital number, since it uses as much as digits as its factorization.

628407007447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2107392, while the sum is 49.

The spelling of 628407007447 in words is "six hundred twenty-eight billion, four hundred seven million, seven thousand, four hundred forty-seven".