977679 has 6 divisors (see below), whose sum is σ = 1412216. Its totient is φ = 651780.

The previous prime is 977671. The next prime is 977681. The reversal of 977679 is 976779.

It is not a de Polignac number, because 977679 - 2³ = 977671 is a prime.

It is a Duffinian number.

977679 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54307 + ... + 54324.

2⁹⁷⁷⁶⁷⁹ is an apocalyptic number.

977679 is a deficient number, since it is larger than the sum of its proper divisors (434537).

977679 is a wasteful number, since it uses less digits than its factorization.

977679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108637 (or 108634 counting only the distinct ones).

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

The square root of 977679 is about 988.7765167114. The cubic root of 977679 is about 99.2503611244.

Subtracting from 977679 its reverse (976779), we obtain a square (900 = 30²).

It can be divided in two parts, 97 and 7679, that added together give a 5-th power (7776 = 6⁵).

The spelling of 977679 in words is "nine hundred seventy-seven thousand, six hundred seventy-nine".