7218466 has 8 divisors (see below), whose sum is σ = 10854684. Its totient is φ = 3600240.

The previous prime is 7218457. The next prime is 7218469. The reversal of 7218466 is 6648127.

It can be written as a sum of positive squares in 2 ways, for example, as 5861241 + 1357225 = 2421^2 + 1165^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (7218469) 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, 3445 + ... + 5128.

Almost surely, 2^7218466 is an apocalyptic number.

7218466 is a deficient number, since it is larger than the sum of its proper divisors (3636218).

7218466 is a wasteful number, since it uses less digits than its factorization.

7218466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8996.

The product of its digits is 16128, while the sum is 34.

The square root of 7218466 is about 2686.7203055026. The cubic root of 7218466 is about 193.2628167984.

The spelling of 7218466 in words is "seven million, two hundred eighteen thousand, four hundred sixty-six".