677923746769 has 4 divisors (see below), whose sum is σ = 717801614244. Its totient is φ = 638045879296.

The previous prime is 677923746763. The next prime is 677923746859. The reversal of 677923746769 is 967647329776.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 446117126400 + 231806620369 = 667920^2 + 481463^2 .

It is a cyclic number.

It is not a de Polignac number, because 677923746769 - 2⁵ = 677923746737 is a prime.

It is a super-2 number, since 2×677923746769² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677923746763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19938933712 + ... + 19938933745.

It is an arithmetic number, because the mean of its divisors is an integer number (179450403561).

Almost surely, 2^677923746769 is an apocalyptic number.

It is an amenable number.

677923746769 is a deficient number, since it is larger than the sum of its proper divisors (39877867475).

677923746769 is a wasteful number, since it uses less digits than its factorization.

677923746769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39877867474.

The product of its digits is 1008189504, while the sum is 73.

The spelling of 677923746769 in words is "six hundred seventy-seven billion, nine hundred twenty-three million, seven hundred forty-six thousand, seven hundred sixty-nine".