680825191 has 8 divisors (see below), whose sum is σ = 684167040. Its totient is φ = 677492088.

The previous prime is 680825183. The next prime is 680825219. The reversal of 680825191 is 191528086.

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 680825191 - 2³ = 680825183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680825111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194640 + ... + 198106.

It is an arithmetic number, because the mean of its divisors is an integer number (85520880).

Almost surely, 2^680825191 is an apocalyptic number.

680825191 is a deficient number, since it is larger than the sum of its proper divisors (3341849).

680825191 is a wasteful number, since it uses less digits than its factorization.

680825191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 680825191 is about 26092.6271387149. The cubic root of 680825191 is about 879.7214989048.

The spelling of 680825191 in words is "six hundred eighty million, eight hundred twenty-five thousand, one hundred ninety-one".