679887216 has 40 divisors (see below), whose sum is σ = 1951529360. Its totient is φ = 226628928.

The previous prime is 679887167. The next prime is 679887217. The reversal of 679887216 is 612788976.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679887217) 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, 786475 + ... + 787338.

It is an arithmetic number, because the mean of its divisors is an integer number (48788234).

Almost surely, 2^679887216 is an apocalyptic number.

It is an amenable number.

679887216 is an abundant number, since it is smaller than the sum of its proper divisors (1271642144).

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

679887216 is a wasteful number, since it uses less digits than its factorization.

679887216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573830 (or 1573818 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 679887216 is about 26074.6469966517. The cubic root of 679887216 is about 879.3173148771.

The spelling of 679887216 in words is "six hundred seventy-nine million, eight hundred eighty-seven thousand, two hundred sixteen".