8442681 has 16 divisors (see below), whose sum is σ = 12297600. Its totient is φ = 5120640.

The previous prime is 8442673. The next prime is 8442689. The reversal of 8442681 is 1862448.

It is an interprime number because it is at equal distance from previous prime (8442673) and next prime (8442689).

It is not a de Polignac number, because 8442681 - 2³ = 8442673 is a prime.

It is a super-2 number, since 2×8442681² = 142557724935522, which contains 22 as substring.

8442681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8442689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1245 + ... + 4293.

It is an arithmetic number, because the mean of its divisors is an integer number (768600).

Almost surely, 2^8442681 is an apocalyptic number.

It is an amenable number.

8442681 is a deficient number, since it is larger than the sum of its proper divisors (3854919).

8442681 is a wasteful number, since it uses less digits than its factorization.

8442681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136.

The product of its digits is 12288, while the sum is 33.

The square root of 8442681 is about 2905.6291917586. The cubic root of 8442681 is about 203.6229820450.

The spelling of 8442681 in words is "eight million, four hundred forty-two thousand, six hundred eighty-one".