677279979 has 6 divisors (see below), whose sum is σ = 978293316. Its totient is φ = 451519980.

The previous prime is 677279963. The next prime is 677279987. The reversal of 677279979 is 979972776.

It is not a de Polignac number, because 677279979 - 2⁴ = 677279963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (677279479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37626657 + ... + 37626674.

It is an arithmetic number, because the mean of its divisors is an integer number (163048886).

Almost surely, 2^677279979 is an apocalyptic number.

677279979 is a deficient number, since it is larger than the sum of its proper divisors (301013337).

677279979 is a wasteful number, since it uses less digits than its factorization.

677279979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75253337 (or 75253334 counting only the distinct ones).

The product of its digits is 21003948, while the sum is 63.

The square root of 677279979 is about 26024.6033399166. The cubic root of 677279979 is about 878.1918706420.

The spelling of 677279979 in words is "six hundred seventy-seven million, two hundred seventy-nine thousand, nine hundred seventy-nine".