7893681 has 8 divisors (see below), whose sum is σ = 10548000. Its totient is φ = 5250912.

The previous prime is 7893673. The next prime is 7893707. The reversal of 7893681 is 1863987.

7893681 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 7893681 - 2³ = 7893673 is a prime.

It is a super-2 number, since 2×7893681² = 124620399459522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7893631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140 + ... + 4133.

It is an arithmetic number, because the mean of its divisors is an integer number (1318500).

Almost surely, 2^7893681 is an apocalyptic number.

It is an amenable number.

7893681 is a deficient number, since it is larger than the sum of its proper divisors (2654319).

7893681 is a wasteful number, since it uses less digits than its factorization.

7893681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5775.

The product of its digits is 72576, while the sum is 42.

The square root of 7893681 is about 2809.5695399829. The cubic root of 7893681 is about 199.1100541893.

The spelling of 7893681 in words is "seven million, eight hundred ninety-three thousand, six hundred eighty-one".