679943287 has 8 divisors (see below), whose sum is σ = 683364960. Its totient is φ = 676529280.

The previous prime is 679943267. The next prime is 679943311. The reversal of 679943287 is 782349976.

679943287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679943287 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 (679943267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256923 + ... + 259555.

It is an arithmetic number, because the mean of its divisors is an integer number (85420620).

Almost surely, 2^679943287 is an apocalyptic number.

679943287 is a deficient number, since it is larger than the sum of its proper divisors (3421673).

679943287 is a wasteful number, since it uses less digits than its factorization.

679943287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3833.

The product of its digits is 4572288, while the sum is 55.

The square root of 679943287 is about 26075.7221760012. The cubic root of 679943287 is about 879.3414869479.

It can be divided in two parts, 6799 and 43287, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 679943287 in words is "six hundred seventy-nine million, nine hundred forty-three thousand, two hundred eighty-seven".