680209824 has 48 divisors (see below), whose sum is σ = 2040631488. Its totient is φ = 194345472.

The previous prime is 680209793. The next prime is 680209847. The reversal of 680209824 is 428902086.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×680209824² = 925370809332221952, which 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, 505437 + ... + 506780.

It is an arithmetic number, because the mean of its divisors is an integer number (42513156).

Almost surely, 2^680209824 is an apocalyptic number.

It is an amenable number.

680209824 is an abundant number, since it is smaller than the sum of its proper divisors (1360421664).

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

680209824 is a wasteful number, since it uses less digits than its factorization.

680209824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012237 (or 1012229 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 680209824 is about 26080.8325020502. The cubic root of 680209824 is about 879.4563722273.

The spelling of 680209824 in words is "six hundred eighty million, two hundred nine thousand, eight hundred twenty-four".