680547240 has 96 divisors (see below), whose sum is σ = 2263266720. Its totient is φ = 177254784.

The previous prime is 680547239. The next prime is 680547251. The reversal of 680547240 is 42745086.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 680547195 and 680547204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6502 + ... + 37461.

It is an arithmetic number, because the mean of its divisors is an integer number (23575695).

Almost surely, 2^680547240 is an apocalyptic number.

680547240 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 680547240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1131633360).

680547240 is an abundant number, since it is smaller than the sum of its proper divisors (1582719480).

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

680547240 is a wasteful number, since it uses less digits than its factorization.

680547240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44023 (or 44016 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 680547240 is about 26087.3003586036. The cubic root of 680547240 is about 879.6017654027.

It can be divided in two parts, 6805 and 47240, that added together give a palindrome (54045).

The spelling of 680547240 in words is "six hundred eighty million, five hundred forty-seven thousand, two hundred forty".