679748087 has 4 divisors (see below), whose sum is σ = 680403360. Its totient is φ = 679092816.

The previous prime is 679748063. The next prime is 679748099. The reversal of 679748087 is 780847976.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 679748087 - 2¹⁰ = 679747063 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 (679748387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326078 + ... + 328155.

It is an arithmetic number, because the mean of its divisors is an integer number (170100840).

Almost surely, 2^679748087 is an apocalyptic number.

679748087 is a deficient number, since it is larger than the sum of its proper divisors (655273).

679748087 is a wasteful number, since it uses less digits than its factorization.

679748087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655272.

The product of its (nonzero) digits is 4741632, while the sum is 56.

The square root of 679748087 is about 26071.9789620965. The cubic root of 679748087 is about 879.2573309652.

The spelling of 679748087 in words is "six hundred seventy-nine million, seven hundred forty-eight thousand, eighty-seven".