680337287 has 4 divisors (see below), whose sum is σ = 777528336. Its totient is φ = 583146240.

The previous prime is 680337283. The next prime is 680337289. The reversal of 680337287 is 782733086.

680337287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 680337287 - 2² = 680337283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680337283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48595514 + ... + 48595527.

It is an arithmetic number, because the mean of its divisors is an integer number (194382084).

Almost surely, 2^680337287 is an apocalyptic number.

680337287 is a deficient number, since it is larger than the sum of its proper divisors (97191049).

680337287 is an equidigital number, since it uses as much as digits as its factorization.

680337287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97191048.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 680337287 is about 26083.2760020669. The cubic root of 680337287 is about 879.5113019183.

The spelling of 680337287 in words is "six hundred eighty million, three hundred thirty-seven thousand, two hundred eighty-seven".