679706725 has 12 divisors (see below), whose sum is σ = 843177060. Its totient is φ = 543545600.

The previous prime is 679706701. The next prime is 679706737. The reversal of 679706725 is 527607976.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 26853124 + 652853601 = 5182^2 + 25551^2 .

It is not a de Polignac number, because 679706725 - 2²¹ = 677609573 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90411 + ... + 97639.

It is an arithmetic number, because the mean of its divisors is an integer number (70264755).

Almost surely, 2^679706725 is an apocalyptic number.

It is an amenable number.

679706725 is a deficient number, since it is larger than the sum of its proper divisors (163470335).

679706725 is a wasteful number, since it uses less digits than its factorization.

679706725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11000 (or 10995 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 49.

The square root of 679706725 is about 26071.1857229394. The cubic root of 679706725 is about 879.2394966233.

The spelling of 679706725 in words is "six hundred seventy-nine million, seven hundred six thousand, seven hundred twenty-five".