679049568 has 120 divisors (see below), whose sum is σ = 2035158048. Its totient is φ = 222034176.

The previous prime is 679049557. The next prime is 679049573. The reversal of 679049568 is 865940976.

679049568 is a `hidden beast` number, since 6 + 7 + 90 + 495 + 68 = 666.

It is a super-2 number, since 2×679049568² = 922216631601973248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 134905 + ... + 139847.

Almost surely, 2^679049568 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 679049568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1017579024).

679049568 is an abundant number, since it is smaller than the sum of its proper divisors (1356108480).

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

679049568 is a wasteful number, since it uses less digits than its factorization.

679049568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5018 (or 5001 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 679049568 is about 26058.5795468594. The cubic root of 679049568 is about 878.9560485426.

The spelling of 679049568 in words is "six hundred seventy-nine million, forty-nine thousand, five hundred sixty-eight".