679865004 has 216 divisors, whose sum is σ = 2248253280. Its totient is φ = 171376128.

The previous prime is 679864963. The next prime is 679865029. The reversal of 679865004 is 400568976.

679865004 is a `hidden beast` number, since 67 + 9 + 86 + 500 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 526792 + ... + 528080.

It is an arithmetic number, because the mean of its divisors is an integer number (10408580).

Almost surely, 2^679865004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679865004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1124126640).

679865004 is an abundant number, since it is smaller than the sum of its proper divisors (1568388276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679865004 is a wasteful number, since it uses less digits than its factorization.

679865004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1337 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 679865004 is about 26074.2210621909. The cubic root of 679865004 is about 879.3077389708.

The spelling of 679865004 in words is "six hundred seventy-nine million, eight hundred sixty-five thousand, four".