1979668 has 6 divisors (see below), whose sum is σ = 3464426. Its totient is φ = 989832.

The previous prime is 1979617. The next prime is 1979683. The reversal of 1979668 is 8669791.

It can be written as a sum of positive squares in only one way, i.e., 1567504 + 412164 = 1252^2 + 642^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247455 + ... + 247462.

2^1979668 is an apocalyptic number.

It is an amenable number.

1979668 is a deficient number, since it is larger than the sum of its proper divisors (1484758).

1979668 is a wasteful number, since it uses less digits than its factorization.

1979668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494921 (or 494919 counting only the distinct ones).

The product of its digits is 163296, while the sum is 46.

The square root of 1979668 is about 1407.0067519383. The cubic root of 1979668 is about 125.5637047411.

The spelling of 1979668 in words is "one million, nine hundred seventy-nine thousand, six hundred sixty-eight".