677320669 has 2 divisors, whose sum is σ = 677320670. Its totient is φ = 677320668.

The previous prime is 677320663. The next prime is 677320711. The reversal of 677320669 is 966023776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664092900 + 13227769 = 25770^2 + 3637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677320669 is a prime.

It is a super-2 number, since 2×677320669² = 917526577309215122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677320663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338660334 + 338660335.

It is an arithmetic number, because the mean of its divisors is an integer number (338660335).

Almost surely, 2^677320669 is an apocalyptic number.

It is an amenable number.

677320669 is a deficient number, since it is larger than the sum of its proper divisors (1).

677320669 is an equidigital number, since it uses as much as digits as its factorization.

677320669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 46.

The square root of 677320669 is about 26025.3850884094. The cubic root of 677320669 is about 878.2094571216.

The spelling of 677320669 in words is "six hundred seventy-seven million, three hundred twenty thousand, six hundred sixty-nine".