680295744 has 126 divisors (see below), whose sum is σ = 2016514890. Its totient is φ = 219271680.

The previous prime is 680295743. The next prime is 680295767. The reversal of 680295744 is 447592086.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 678081600 + 2214144 = 26040^2 + 1488^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 680295744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680295743) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 552922 + ... + 554150.

Almost surely, 2^680295744 is an apocalyptic number.

680295744 is a gapful number since it is divisible by the number (64) 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 680295744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008257445).

680295744 is an abundant number, since it is smaller than the sum of its proper divisors (1336219146).

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

680295744 is a wasteful number, since it uses less digits than its factorization.

680295744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 680295744 is about 26082.4796367217. The cubic root of 680295744 is about 879.4933998755.

The spelling of 680295744 in words is "six hundred eighty million, two hundred ninety-five thousand, seven hundred forty-four".