679602685 has 4 divisors (see below), whose sum is σ = 815523228. Its totient is φ = 543682144.

The previous prime is 679602673. The next prime is 679602701. The reversal of 679602685 is 586206976.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75377124 + 604225561 = 8682^2 + 24581^2 .

It is a cyclic number.

It is not a de Polignac number, because 679602685 - 2⁵ = 679602653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67960264 + ... + 67960273.

It is an arithmetic number, because the mean of its divisors is an integer number (203880807).

Almost surely, 2^679602685 is an apocalyptic number.

It is an amenable number.

679602685 is a deficient number, since it is larger than the sum of its proper divisors (135920543).

679602685 is a wasteful number, since it uses less digits than its factorization.

679602685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135920542.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 679602685 is about 26069.1903403232. The cubic root of 679602685 is about 879.1946337721.

The spelling of 679602685 in words is "six hundred seventy-nine million, six hundred two thousand, six hundred eighty-five".