814681 has 8 divisors (see below), whose sum is σ = 937664. Its totient is φ = 693360.

The previous prime is 814643. The next prime is 814687. The reversal of 814681 is 186418.

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 814681 - 2¹¹ = 812633 is a prime.

It is a super-2 number, since 2×814681² = 1327410263522, which contains 22 as substring.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (814687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (117208).

2⁸¹⁴⁶⁸¹ is an apocalyptic number.

It is an amenable number.

814681 is a deficient number, since it is larger than the sum of its proper divisors (122983).

814681 is a wasteful number, since it uses less digits than its factorization.

814681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831.

The product of its digits is 1536, while the sum is 28.

The square root of 814681 is about 902.5968092122. The cubic root of 814681 is about 93.3961977277.

The spelling of 814681 in words is "eight hundred fourteen thousand, six hundred eighty-one".