677712239969 has 2 divisors, whose sum is σ = 677712239970. Its totient is φ = 677712239968.

The previous prime is 677712239951. The next prime is 677712240017. The reversal of 677712239969 is 969932217776.

677712239969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666966222400 + 10746017569 = 816680^2 + 103663^2 .

It is a cyclic number.

It is not a de Polignac number, because 677712239969 - 2¹² = 677712235873 is a prime.

It is a super-2 number, since 2×677712239969² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 677712239899 and 677712239908.

It is not a weakly prime, because it can be changed into another prime (677712238969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338856119984 + 338856119985.

It is an arithmetic number, because the mean of its divisors is an integer number (338856119985).

Almost surely, 2^677712239969 is an apocalyptic number.

It is an amenable number.

677712239969 is a deficient number, since it is larger than the sum of its proper divisors (1).

677712239969 is an equidigital number, since it uses as much as digits as its factorization.

677712239969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108020304, while the sum is 68.

The spelling of 677712239969 in words is "six hundred seventy-seven billion, seven hundred twelve million, two hundred thirty-nine thousand, nine hundred sixty-nine".