679084817 has 8 divisors (see below), whose sum is σ = 684076800. Its totient is φ = 674101584.

The previous prime is 679084753. The next prime is 679084823. The reversal of 679084817 is 718480976.

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 679084817 - 2⁶ = 679084753 is a prime.

It is a super-2 number, since 2×679084817² = 922312377359846978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679084837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274934 + ... + 277392.

It is an arithmetic number, because the mean of its divisors is an integer number (85509600).

Almost surely, 2^679084817 is an apocalyptic number.

It is an amenable number.

679084817 is a deficient number, since it is larger than the sum of its proper divisors (4991983).

679084817 is a wasteful number, since it uses less digits than its factorization.

679084817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4375.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 679084817 is about 26059.2558796294. The cubic root of 679084817 is about 878.9712569492.

The spelling of 679084817 in words is "six hundred seventy-nine million, eighty-four thousand, eight hundred seventeen".