677718793 has 2 divisors, whose sum is σ = 677718794. Its totient is φ = 677718792.

The previous prime is 677718773. The next prime is 677718857. The reversal of 677718793 is 397817776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373146489 + 304572304 = 19317^2 + 17452^2 .

It is a cyclic number.

It is not a de Polignac number, because 677718793 - 2⁹ = 677718281 is a prime.

It is not a weakly prime, because it can be changed into another prime (677718703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338859396 + 338859397.

It is an arithmetic number, because the mean of its divisors is an integer number (338859397).

Almost surely, 2^677718793 is an apocalyptic number.

It is an amenable number.

677718793 is a deficient number, since it is larger than the sum of its proper divisors (1).

677718793 is an equidigital number, since it uses as much as digits as its factorization.

677718793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3111696, while the sum is 55.

The square root of 677718793 is about 26033.0327276712. The cubic root of 677718793 is about 878.3814917259.

The spelling of 677718793 in words is "six hundred seventy-seven million, seven hundred eighteen thousand, seven hundred ninety-three".