679981671 has 24 divisors (see below), whose sum is σ = 1061843120. Its totient is φ = 417851136.

The previous prime is 679981663. The next prime is 679981693. The reversal of 679981671 is 176189976.

679981671 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 679981671 - 2³ = 679981663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679982671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47410 + ... + 60063.

Almost surely, 2^679981671 is an apocalyptic number.

679981671 is a deficient number, since it is larger than the sum of its proper divisors (381861449).

679981671 is a wasteful number, since it uses less digits than its factorization.

679981671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107535 (or 107532 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The square root of 679981671 is about 26076.4581759103. The cubic root of 679981671 is about 879.3580334302.

The spelling of 679981671 in words is "six hundred seventy-nine million, nine hundred eighty-one thousand, six hundred seventy-one".