677990029 has 2 divisors, whose sum is σ = 677990030. Its totient is φ = 677990028.

The previous prime is 677990023. The next prime is 677990041. The reversal of 677990029 is 920099776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 667033929 + 10956100 = 25827^2 + 3310^2 .

It is a cyclic number.

It is not a de Polignac number, because 677990029 - 2⁵ = 677989997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677990023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338995014 + 338995015.

It is an arithmetic number, because the mean of its divisors is an integer number (338995015).

Almost surely, 2^677990029 is an apocalyptic number.

It is an amenable number.

677990029 is a deficient number, since it is larger than the sum of its proper divisors (1).

677990029 is an equidigital number, since it uses as much as digits as its factorization.

677990029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 677990029 is about 26038.2416649051. The cubic root of 677990029 is about 878.4986577776.

The spelling of 677990029 in words is "six hundred seventy-seven million, nine hundred ninety thousand, twenty-nine".