628407004493 has 2 divisors, whose sum is σ = 628407004494. Its totient is φ = 628407004492.

The previous prime is 628407004447. The next prime is 628407004529. The reversal of 628407004493 is 394400704826.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 618774170884 + 9632833609 = 786622^2 + 98147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628407004493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628407024493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314203502246 + 314203502247.

It is an arithmetic number, because the mean of its divisors is an integer number (314203502247).

Almost surely, 2^628407004493 is an apocalyptic number.

It is an amenable number.

628407004493 is a deficient number, since it is larger than the sum of its proper divisors (1).

628407004493 is an equidigital number, since it uses as much as digits as its factorization.

628407004493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 628407004493 in words is "six hundred twenty-eight billion, four hundred seven million, four thousand, four hundred ninety-three".