1679679 has 12 divisors (see below), whose sum is σ = 2441296. Its totient is φ = 1112832.

The previous prime is 1679669. The next prime is 1679681. The reversal of 1679679 is 9769761.

It is not a de Polignac number, because 1679679 - 2¹¹ = 1677631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679609) 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, 1254 + ... + 2220.

2^1679679 is an apocalyptic number.

1679679 is a deficient number, since it is larger than the sum of its proper divisors (761617).

1679679 is a wasteful number, since it uses less digits than its factorization.

1679679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166 (or 1163 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 1679679 is about 1296.0243053276. The cubic root of 1679679 is about 118.8708671486.

The spelling of 1679679 in words is "one million, six hundred seventy-nine thousand, six hundred seventy-nine".