680235281 has 36 divisors (see below), whose sum is σ = 809193840. Its totient is φ = 567003360.

The previous prime is 680235247. The next prime is 680235289. The reversal of 680235281 is 182532086.

It is not a de Polignac number, because 680235281 - 2¹⁸ = 679973137 is a prime.

It is a super-2 number, since 2×680235281² = 925440075034297922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680235289) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 4893710 + ... + 4893848.

Almost surely, 2^680235281 is an apocalyptic number.

It is an amenable number.

680235281 is a deficient number, since it is larger than the sum of its proper divisors (128958559).

680235281 is a wasteful number, since it uses less digits than its factorization.

680235281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 680235281 is about 26081.3205378869. The cubic root of 680235281 is about 879.4673433722.

The spelling of 680235281 in words is "six hundred eighty million, two hundred thirty-five thousand, two hundred eighty-one".