7982681 has 4 divisors (see below), whose sum is σ = 9123072. Its totient is φ = 6842292.

The previous prime is 7982671. The next prime is 7982683. The reversal of 7982681 is 1862897.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1862897 = 53 ⋅35149.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7982681 is a prime.

It is a super-2 number, since 2×7982681² = 127446391895522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7982683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570185 + ... + 570198.

It is an arithmetic number, because the mean of its divisors is an integer number (2280768).

Almost surely, 2^7982681 is an apocalyptic number.

It is an amenable number.

7982681 is a deficient number, since it is larger than the sum of its proper divisors (1140391).

7982681 is a wasteful number, since it uses less digits than its factorization.

7982681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140390.

The product of its digits is 48384, while the sum is 41.

The square root of 7982681 is about 2825.3638703714. The cubic root of 7982681 is about 199.8555707260.

The spelling of 7982681 in words is "seven million, nine hundred eighty-two thousand, six hundred eighty-one".