7118945 has 4 divisors (see below), whose sum is σ = 8542740. Its totient is φ = 5695152.

The previous prime is 7118921. The next prime is 7118963. The reversal of 7118945 is 5498117.

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 4293184 + 2825761 = 2072^2 + 1681^2 .

It is a cyclic number.

It is not a de Polignac number, because 7118945 - 2¹⁰ = 7117921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 711890 + ... + 711899.

It is an arithmetic number, because the mean of its divisors is an integer number (2135685).

Almost surely, 2^7118945 is an apocalyptic number.

It is an amenable number.

7118945 is a deficient number, since it is larger than the sum of its proper divisors (1423795).

7118945 is a wasteful number, since it uses less digits than its factorization.

7118945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423794.

The product of its digits is 10080, while the sum is 35.

The square root of 7118945 is about 2668.1351165187. The cubic root of 7118945 is about 192.3705319357.

The spelling of 7118945 in words is "seven million, one hundred eighteen thousand, nine hundred forty-five".