680577240 has 128 divisors (see below), whose sum is σ = 2377589760. Its totient is φ = 152615424.

The previous prime is 680577239. The next prime is 680577253. The reversal of 680577240 is 42775086.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 36877 + ... + 52163.

It is an arithmetic number, because the mean of its divisors is an integer number (18574920).

Almost surely, 2^680577240 is an apocalyptic number.

680577240 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 680577240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1188794880).

680577240 is an abundant number, since it is smaller than the sum of its proper divisors (1697012520).

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

680577240 is a wasteful number, since it uses less digits than its factorization.

680577240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15361 (or 15357 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 680577240 is about 26087.8753446884. The cubic root of 680577240 is about 879.6146901313.

The spelling of 680577240 in words is "six hundred eighty million, five hundred seventy-seven thousand, two hundred forty".