677954612969 has 2 divisors, whose sum is σ = 677954612970. Its totient is φ = 677954612968.

The previous prime is 677954612911. The next prime is 677954612981. The reversal of 677954612969 is 969216459776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 563820774400 + 114133838569 = 750880^2 + 337837^2 .

It is a cyclic number.

It is not a de Polignac number, because 677954612969 - 2²⁸ = 677686177513 is a prime.

It is a super-2 number, since 2×677954612969² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (677954612369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338977306484 + 338977306485.

It is an arithmetic number, because the mean of its divisors is an integer number (338977306485).

Almost surely, 2^677954612969 is an apocalyptic number.

It is an amenable number.

677954612969 is a deficient number, since it is larger than the sum of its proper divisors (1).

677954612969 is an equidigital number, since it uses as much as digits as its factorization.

677954612969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 308629440, while the sum is 71.

The spelling of 677954612969 in words is "six hundred seventy-seven billion, nine hundred fifty-four million, six hundred twelve thousand, nine hundred sixty-nine".