680690255 has 16 divisors (see below), whose sum is σ = 934201344. Its totient is φ = 466417440.

The previous prime is 680690239. The next prime is 680690261. The reversal of 680690255 is 552096086.

It is not a de Polignac number, because 680690255 - 2⁴ = 680690239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47234 + ... + 59936.

It is an arithmetic number, because the mean of its divisors is an integer number (58387584).

Almost surely, 2^680690255 is an apocalyptic number.

680690255 is a deficient number, since it is larger than the sum of its proper divisors (253511089).

680690255 is a wasteful number, since it uses less digits than its factorization.

680690255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14246.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 680690255 is about 26090.0412993157. The cubic root of 680690255 is about 879.6633763280.

The spelling of 680690255 in words is "six hundred eighty million, six hundred ninety thousand, two hundred fifty-five".