680240247 has 8 divisors (see below), whose sum is σ = 907119744. Its totient is φ = 453427128.

The previous prime is 680240243. The next prime is 680240251. The reversal of 680240247 is 742042086.

680240247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (680240243) and next prime (680240251).

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

It is not a de Polignac number, because 680240247 - 2² = 680240243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680240243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17088 + ... + 40650.

It is an arithmetic number, because the mean of its divisors is an integer number (113389968).

Almost surely, 2^680240247 is an apocalyptic number.

680240247 is a deficient number, since it is larger than the sum of its proper divisors (226879497).

680240247 is a wasteful number, since it uses less digits than its factorization.

680240247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33189.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 680240247 is about 26081.4157399479. The cubic root of 680240247 is about 879.4694835259.

The spelling of 680240247 in words is "six hundred eighty million, two hundred forty thousand, two hundred forty-seven".