807681 has 8 divisors (see below), whose sum is σ = 1230784. Its totient is φ = 461520.

The previous prime is 807647. The next prime is 807689. The reversal of 807681 is 186708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 807681 - 2¹⁰ = 806657 is a prime.

It is a super-2 number, since 2×807681² = 1304697195522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (807689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19210 + ... + 19251.

It is an arithmetic number, because the mean of its divisors is an integer number (153848).

2⁸⁰⁷⁶⁸¹ is an apocalyptic number.

It is an amenable number.

807681 is a deficient number, since it is larger than the sum of its proper divisors (423103).

807681 is a wasteful number, since it uses less digits than its factorization.

807681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38471.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 807681 is about 898.7107432317. The cubic root of 807681 is about 93.1279312321.

The spelling of 807681 in words is "eight hundred seven thousand, six hundred eighty-one".