681272 has 8 divisors (see below), whose sum is σ = 1277400. Its totient is φ = 340632.

The previous prime is 681271. The next prime is 681293. The reversal of 681272 is 272186.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42572 + ... + 42587.

It is an arithmetic number, because the mean of its divisors is an integer number (159675).

2⁶⁸¹²⁷² is an apocalyptic number.

It is an amenable number.

681272 is a deficient number, since it is larger than the sum of its proper divisors (596128).

681272 is a wasteful number, since it uses less digits than its factorization.

681272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85165 (or 85161 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 681272 is about 825.3920280691. The cubic root of 681272 is about 87.9913903423.

The spelling of 681272 in words is "six hundred eighty-one thousand, two hundred seventy-two".