814691 has 6 divisors (see below), whose sum is σ = 865740. Its totient is φ = 766496.

The previous prime is 814687. The next prime is 814699. The reversal of 814691 is 196418.

It is not a de Polignac number, because 814691 - 2² = 814687 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 814691.

It is not an unprimeable number, because it can be changed into a prime (814699) 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 5 ways as a sum of consecutive naturals, for example, 1121 + ... + 1698.

It is an arithmetic number, because the mean of its divisors is an integer number (144290).

2⁸¹⁴⁶⁹¹ is an apocalyptic number.

814691 is a deficient number, since it is larger than the sum of its proper divisors (51049).

814691 is a wasteful number, since it uses less digits than its factorization.

814691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853 (or 2836 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 814691 is about 902.6023487672. The cubic root of 814691 is about 93.3965798643.

The spelling of 814691 in words is "eight hundred fourteen thousand, six hundred ninety-one".