7218606 has 8 divisors (see below), whose sum is σ = 14437224. Its totient is φ = 2406200.

The previous prime is 7218599. The next prime is 7218623. The reversal of 7218606 is 6068127.

It is a happy number.

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

7218606 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601545 + ... + 601556.

It is an arithmetic number, because the mean of its divisors is an integer number (1804653).

Almost surely, 2^7218606 is an apocalyptic number.

7218606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7218606 is a wasteful number, since it uses less digits than its factorization.

7218606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203106.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 7218606 is about 2686.7463594467. The cubic root of 7218606 is about 193.2640662153.

The spelling of 7218606 in words is "seven million, two hundred eighteen thousand, six hundred six".