677961769 has 2 divisors, whose sum is σ = 677961770. Its totient is φ = 677961768.

The previous prime is 677961749. The next prime is 677961799. The reversal of 677961769 is 967169776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 432099369 + 245862400 = 20787^2 + 15680^2 .

It is a cyclic number.

It is not a de Polignac number, because 677961769 - 2¹⁷ = 677830697 is a prime.

It is a super-2 number, since 2×677961769² = 919264320451218722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (677961749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338980884 + 338980885.

It is an arithmetic number, because the mean of its divisors is an integer number (338980885).

Almost surely, 2^677961769 is an apocalyptic number.

It is an amenable number.

677961769 is a deficient number, since it is larger than the sum of its proper divisors (1).

677961769 is an equidigital number, since it uses as much as digits as its factorization.

677961769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6001128, while the sum is 58.

The square root of 677961769 is about 26037.6989958790. The cubic root of 677961769 is about 878.4864517392.

The spelling of 677961769 in words is "six hundred seventy-seven million, nine hundred sixty-one thousand, seven hundred sixty-nine".