679443770 has 8 divisors (see below), whose sum is σ = 1222998804. Its totient is φ = 271777504.

The previous prime is 679443769. The next prime is 679443799. The reversal of 679443770 is 77344976.

It can be written as a sum of positive squares in 2 ways, for example, as 553802089 + 125641681 = 23533^2 + 11209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33972179 + ... + 33972198.

Almost surely, 2^679443770 is an apocalyptic number.

679443770 is a deficient number, since it is larger than the sum of its proper divisors (543555034).

679443770 is a wasteful number, since it uses less digits than its factorization.

679443770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67944384.

The product of its (nonzero) digits is 889056, while the sum is 47.

The square root of 679443770 is about 26066.1422155255. The cubic root of 679443770 is about 879.1260995584.

The spelling of 679443770 in words is "six hundred seventy-nine million, four hundred forty-three thousand, seven hundred seventy".