679826387 has 8 divisors (see below), whose sum is σ = 712953600. Its totient is φ = 646996680.

The previous prime is 679826359. The next prime is 679826417. The reversal of 679826387 is 783628976.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 679826387 - 2⁸ = 679826131 is a prime.

It is a super-2 number, since 2×679826387² = 924327832922947538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679826687) 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, 69689 + ... + 78842.

It is an arithmetic number, because the mean of its divisors is an integer number (89119200).

Almost surely, 2^679826387 is an apocalyptic number.

679826387 is a deficient number, since it is larger than the sum of its proper divisors (33127213).

679826387 is a wasteful number, since it uses less digits than its factorization.

679826387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148753.

The product of its digits is 6096384, while the sum is 56.

The square root of 679826387 is about 26073.4805309916. The cubic root of 679826387 is about 879.2910901411.

The spelling of 679826387 in words is "six hundred seventy-nine million, eight hundred twenty-six thousand, three hundred eighty-seven".