677979 has 12 divisors (see below), whose sum is σ = 994032. Its totient is φ = 445200.

The previous prime is 677959. The next prime is 677983. The reversal of 677979 is 979776.

677979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 677979 - 2⁵ = 677947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (677959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109 + ... + 1169.

It is an arithmetic number, because the mean of its divisors is an integer number (82836).

2⁶⁷⁷⁹⁷⁹ is an apocalyptic number.

677979 is a deficient number, since it is larger than the sum of its proper divisors (316053).

677979 is a wasteful number, since it uses less digits than its factorization.

677979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1135 counting only the distinct ones).

The product of its digits is 166698, while the sum is 45.

The square root of 677979 is about 823.3948020239. The cubic root of 677979 is about 87.8493894180.

The spelling of 677979 in words is "six hundred seventy-seven thousand, nine hundred seventy-nine".