7218475 has 12 divisors (see below), whose sum is σ = 9765000. Its totient is φ = 5249600.

The previous prime is 7218469. The next prime is 7218479. The reversal of 7218475 is 5748127.

It is a happy number.

It is not a de Polignac number, because 7218475 - 2⁹ = 7217963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7218475.

It is not an unprimeable number, because it can be changed into a prime (7218479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12850 + ... + 13399.

It is an arithmetic number, because the mean of its divisors is an integer number (813750).

Almost surely, 2^7218475 is an apocalyptic number.

7218475 is a deficient number, since it is larger than the sum of its proper divisors (2546525).

7218475 is a wasteful number, since it uses less digits than its factorization.

7218475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26270 (or 26265 counting only the distinct ones).

The product of its digits is 15680, while the sum is 34.

The square root of 7218475 is about 2686.7219804066. The cubic root of 7218475 is about 193.2628971185.

The spelling of 7218475 in words is "seven million, two hundred eighteen thousand, four hundred seventy-five".