7118881 has 16 divisors (see below), whose sum is σ = 9031680. Its totient is φ = 5449680.

The previous prime is 7118879. The next prime is 7118893. The reversal of 7118881 is 1888117.

It is a cyclic number.

It is not a de Polignac number, because 7118881 - 2¹ = 7118879 is a prime.

It is a super-2 number, since 2×7118881² = 101356933384322, which contains 22 as substring.

7118881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7118861) 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, 3760 + ... + 5326.

It is an arithmetic number, because the mean of its divisors is an integer number (564480).

Almost surely, 2^7118881 is an apocalyptic number.

It is an amenable number.

7118881 is a deficient number, since it is larger than the sum of its proper divisors (1912799).

7118881 is a wasteful number, since it uses less digits than its factorization.

7118881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644.

The product of its digits is 3584, while the sum is 34.

The square root of 7118881 is about 2668.1231230961. The cubic root of 7118881 is about 192.3699554574.

The spelling of 7118881 in words is "seven million, one hundred eighteen thousand, eight hundred eighty-one".