680256427 has 8 divisors (see below), whose sum is σ = 705102336. Its totient is φ = 655842792.

The previous prime is 680256419. The next prime is 680256469. The reversal of 680256427 is 724652086.

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

It is a cyclic number.

It is not a de Polignac number, because 680256427 - 2³ = 680256419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 680256427.

It is not an unprimeable number, because it can be changed into a prime (680256527) 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, 104863 + ... + 111160.

It is an arithmetic number, because the mean of its divisors is an integer number (88137792).

Almost surely, 2^680256427 is an apocalyptic number.

680256427 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

680256427 is a deficient number, since it is larger than the sum of its proper divisors (24845909).

680256427 is a wasteful number, since it uses less digits than its factorization.

680256427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216137.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 680256427 is about 26081.7259206518. The cubic root of 680256427 is about 879.4764564071.

The spelling of 680256427 in words is "six hundred eighty million, two hundred fifty-six thousand, four hundred twenty-seven".