679740880 has 80 divisors (see below), whose sum is σ = 1945125504. Its totient is φ = 215124480.

The previous prime is 679740877. The next prime is 679740883. The reversal of 679740880 is 88047976.

It is an interprime number because it is at equal distance from previous prime (679740877) and next prime (679740883).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679740883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39406 + ... + 53965.

Almost surely, 2^679740880 is an apocalyptic number.

It is an amenable number.

679740880 is an abundant number, since it is smaller than the sum of its proper divisors (1265384624).

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

679740880 is a wasteful number, since it uses less digits than its factorization.

679740880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93404 (or 93398 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 679740880 is about 26071.8407482096. The cubic root of 679740880 is about 879.2542235248.

The spelling of 679740880 in words is "six hundred seventy-nine million, seven hundred forty thousand, eight hundred eighty".