679285555820 has 24 divisors (see below), whose sum is σ = 1427899611600. Its totient is φ = 271447566272.

The previous prime is 679285555799. The next prime is 679285555877. The reversal of 679285555820 is 28555582976.

It is a super-2 number, since 2×679285555820² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16645115 + ... + 16685874.

It is an arithmetic number, because the mean of its divisors is an integer number (59495817150).

Almost surely, 2^679285555820 is an apocalyptic number.

It is an amenable number.

679285555820 is an abundant number, since it is smaller than the sum of its proper divisors (748614055780).

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

679285555820 is a wasteful number, since it uses less digits than its factorization.

679285555820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33332017 (or 33332015 counting only the distinct ones).

The product of its (nonzero) digits is 60480000, while the sum is 62.

The spelling of 679285555820 in words is "six hundred seventy-nine billion, two hundred eighty-five million, five hundred fifty-five thousand, eight hundred twenty".