677918769 has 8 divisors (see below), whose sum is σ = 986063712. Its totient is φ = 410859840.

The previous prime is 677918743. The next prime is 677918771. The reversal of 677918769 is 967819776.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 677918769 - 2⁹ = 677918257 is a prime.

It is a super-2 number, since 2×677918769² = 919147714724950722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (677918719) 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 in 7 ways as a sum of consecutive naturals, for example, 10271464 + ... + 10271529.

It is an arithmetic number, because the mean of its divisors is an integer number (123257964).

Almost surely, 2^677918769 is an apocalyptic number.

It is an amenable number.

677918769 is a deficient number, since it is larger than the sum of its proper divisors (308144943).

677918769 is a wasteful number, since it uses less digits than its factorization.

677918769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20543007.

The product of its digits is 8001504, while the sum is 60.

The square root of 677918769 is about 26036.8732569792. The cubic root of 677918769 is about 878.4678785601.

The spelling of 677918769 in words is "six hundred seventy-seven million, nine hundred eighteen thousand, seven hundred sixty-nine".