979657 has 6 divisors (see below), whose sum is σ = 1139658. Its totient is φ = 839664.

The previous prime is 979651. The next prime is 979691. The reversal of 979657 is 756979.

It can be written as a sum of positive squares in only one way, i.e., 866761 + 112896 = 931^2 + 336^2 .

It is not a de Polignac number, because 979657 - 2⁷ = 979529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9948 + ... + 10045.

It is an arithmetic number, because the mean of its divisors is an integer number (189943).

2⁹⁷⁹⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

979657 is a deficient number, since it is larger than the sum of its proper divisors (160001).

979657 is a wasteful number, since it uses less digits than its factorization.

979657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20007 (or 20000 counting only the distinct ones).

The product of its digits is 119070, while the sum is 43.

The square root of 979657 is about 989.7762373385. The cubic root of 979657 is about 99.3172491212.

The spelling of 979657 in words is "nine hundred seventy-nine thousand, six hundred fifty-seven".