679985161 has 8 divisors (see below), whose sum is σ = 682377984. Its totient is φ = 677597760.

The previous prime is 679985113. The next prime is 679985171. The reversal of 679985161 is 161589976.

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 679985161 - 2¹¹ = 679983113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 679985099 and 679985108.

It is not an unprimeable number, because it can be changed into a prime (679985171) 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, 615936 + ... + 617038.

It is an arithmetic number, because the mean of its divisors is an integer number (85297248).

Almost surely, 2^679985161 is an apocalyptic number.

It is an amenable number.

679985161 is a deficient number, since it is larger than the sum of its proper divisors (2392823).

679985161 is a wasteful number, since it uses less digits than its factorization.

679985161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711.

The product of its digits is 816480, while the sum is 52.

The square root of 679985161 is about 26076.5250944216. The cubic root of 679985161 is about 879.3595378601.

The spelling of 679985161 in words is "six hundred seventy-nine million, nine hundred eighty-five thousand, one hundred sixty-one".