680684245 has 16 divisors (see below), whose sum is σ = 834442560. Its totient is φ = 532923904.

The previous prime is 680684237. The next prime is 680684269. The reversal of 680684245 is 542486086.

It is a cyclic number.

It is not a de Polignac number, because 680684245 - 2³ = 680684237 is a prime.

It is a super-3 number, since 3×680684245³ (a number of 27 digits) contains 333 as substring.

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, 36741 + ... + 52069.

It is an arithmetic number, because the mean of its divisors is an integer number (52152660).

Almost surely, 2^680684245 is an apocalyptic number.

It is an amenable number.

680684245 is a deficient number, since it is larger than the sum of its proper divisors (153758315).

680684245 is a wasteful number, since it uses less digits than its factorization.

680684245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15524.

The product of its (nonzero) digits is 368640, while the sum is 43.

The square root of 680684245 is about 26089.9261210146. The cubic root of 680684245 is about 879.6607873911.

The spelling of 680684245 in words is "six hundred eighty million, six hundred eighty-four thousand, two hundred forty-five".