912681 has 32 divisors (see below), whose sum is σ = 1689600. Its totient is φ = 473040.

The previous prime is 912649. The next prime is 912727. The reversal of 912681 is 186219.

It is not a de Polignac number, because 912681 - 2⁵ = 912649 is a prime.

It is a super-2 number, since 2×912681² = 1665973215522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

912681 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (912631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1860 + ... + 2298.

It is an arithmetic number, because the mean of its divisors is an integer number (52800).

912681 is a Friedman number, since it can be written as 8+(91+6)^(2+1), using all its digits and the basic arithmetic operations.

2⁹¹²⁶⁸¹ is an apocalyptic number.

It is an amenable number.

912681 is a deficient number, since it is larger than the sum of its proper divisors (776919).

912681 is a wasteful number, since it uses less digits than its factorization.

912681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 460 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 912681 is about 955.3433937595. The cubic root of 912681 is about 97.0002834158. Note that the first 3 decimals are identical.

It can be divided in two parts, 91 and 2681, that added together give a palindrome (2772).

The spelling of 912681 in words is "nine hundred twelve thousand, six hundred eighty-one".