680724355 has 8 divisors (see below), whose sum is σ = 829061712. Its totient is φ = 536451168.

The previous prime is 680724329. The next prime is 680724383. The reversal of 680724355 is 553427086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 680724355 - 2⁷ = 680724227 is a prime.

It is a Duffinian number.

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, 1015672 + ... + 1016341.

It is an arithmetic number, because the mean of its divisors is an integer number (103632714).

Almost surely, 2^680724355 is an apocalyptic number.

680724355 is a deficient number, since it is larger than the sum of its proper divisors (148337357).

680724355 is a wasteful number, since it uses less digits than its factorization.

680724355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032085.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 680724355 is about 26090.6947971878. The cubic root of 680724355 is about 879.6780653490.

It can be divided in two parts, 68072 and 4355, that added together give a palindrome (72427).

The spelling of 680724355 in words is "six hundred eighty million, seven hundred twenty-four thousand, three hundred fifty-five".