679660711380 has 336 divisors, whose sum is σ = 2455055817984. Its totient is φ = 154754219520.

The previous prime is 679660711343. The next prime is 679660711397. The reversal of 679660711380 is 83117066976.

It is a happy number.

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 111 ways as a sum of consecutive naturals, for example, 26829120 + ... + 26854440.

It is an arithmetic number, because the mean of its divisors is an integer number (7306713744).

Almost surely, 2^679660711380 is an apocalyptic number.

679660711380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679660711380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1227527908992).

679660711380 is an abundant number, since it is smaller than the sum of its proper divisors (1775395106604).

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

679660711380 is a wasteful number, since it uses less digits than its factorization.

679660711380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25618 (or 25601 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 679660711380 in words is "six hundred seventy-nine billion, six hundred sixty million, seven hundred eleven thousand, three hundred eighty".