679226188665 has 32 divisors (see below), whose sum is σ = 1123016702976. Its totient is φ = 350193991680.

The previous prime is 679226188643. The next prime is 679226188691. The reversal of 679226188665 is 566881622976.

It is not a de Polignac number, because 679226188665 - 2⁵ = 679226188633 is a prime.

It is a super-2 number, since 2×679226188665² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 679226188596 and 679226188605.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 343752 + ... + 1215161.

It is an arithmetic number, because the mean of its divisors is an integer number (35094271968).

Almost surely, 2^679226188665 is an apocalyptic number.

It is an amenable number.

679226188665 is a deficient number, since it is larger than the sum of its proper divisors (443790514311).

679226188665 is a wasteful number, since it uses less digits than its factorization.

679226188665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559889.

The product of its digits is 104509440, while the sum is 66.

The spelling of 679226188665 in words is "six hundred seventy-nine billion, two hundred twenty-six million, one hundred eighty-eight thousand, six hundred sixty-five".