680889131 has 4 divisors (see below), whose sum is σ = 733265232. Its totient is φ = 628513032.

The previous prime is 680889119. The next prime is 680889179. The reversal of 680889131 is 131988086.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 680889131 - 2⁶ = 680889067 is a prime.

It is a super-2 number, since 2×680889131² = 927220017427870322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680889331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26188031 + ... + 26188056.

It is an arithmetic number, because the mean of its divisors is an integer number (183316308).

Almost surely, 2^680889131 is an apocalyptic number.

680889131 is a deficient number, since it is larger than the sum of its proper divisors (52376101).

680889131 is a wasteful number, since it uses less digits than its factorization.

680889131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52376100.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 680889131 is about 26093.8523602783. The cubic root of 680889131 is about 879.7490378544.

The spelling of 680889131 in words is "six hundred eighty million, eight hundred eighty-nine thousand, one hundred thirty-one".