7018216 has 16 divisors (see below), whose sum is σ = 13480740. Its totient is φ = 3423360.

The previous prime is 7018213. The next prime is 7018259. The reversal of 7018216 is 6128107.

It can be written as a sum of positive squares in 2 ways, for example, as 7001316 + 16900 = 2646^2 + 130^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7018213) 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, 10371 + ... + 11026.

Almost surely, 2^7018216 is an apocalyptic number.

It is an amenable number.

7018216 is a deficient number, since it is larger than the sum of its proper divisors (6462524).

7018216 is a wasteful number, since it uses less digits than its factorization.

7018216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21444 (or 21440 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 7018216 is about 2649.1915748016. The cubic root of 7018216 is about 191.4589076662.

The spelling of 7018216 in words is "seven million, eighteen thousand, two hundred sixteen".