7996181 has 4 divisors (see below), whose sum is σ = 8212332. Its totient is φ = 7780032.

The previous prime is 7996133. The next prime is 7996187. The reversal of 7996181 is 1816997.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3960100 + 4036081 = 1990^2 + 2009^2 .

It is a cyclic number.

It is not a de Polignac number, because 7996181 - 2¹⁰ = 7995157 is a prime.

It is a super-2 number, since 2×7996181² = 127877821169522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7996187) 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, 108020 + ... + 108093.

It is an arithmetic number, because the mean of its divisors is an integer number (2053083).

Almost surely, 2^7996181 is an apocalyptic number.

It is an amenable number.

7996181 is a deficient number, since it is larger than the sum of its proper divisors (216151).

7996181 is a wasteful number, since it uses less digits than its factorization.

7996181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216150.

The product of its digits is 27216, while the sum is 41.

The square root of 7996181 is about 2827.7519339574. The cubic root of 7996181 is about 199.9681699345.

The spelling of 7996181 in words is "seven million, nine hundred ninety-six thousand, one hundred eighty-one".