681164 has 24 divisors (see below), whose sum is σ = 1321488. Its totient is φ = 304640.

The previous prime is 681151. The next prime is 681167. The reversal of 681164 is 461186.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 681164.

It is not an unprimeable number, because it can be changed into a prime (681167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4904 + ... + 5040.

It is an arithmetic number, because the mean of its divisors is an integer number (55062).

2⁶⁸¹¹⁶⁴ is an apocalyptic number.

It is an amenable number.

681164 is a deficient number, since it is larger than the sum of its proper divisors (640324).

681164 is a wasteful number, since it uses less digits than its factorization.

681164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 263 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 681164 is about 825.3266020189. The cubic root of 681164 is about 87.9867404264.

The spelling of 681164 in words is "six hundred eighty-one thousand, one hundred sixty-four".