7218673 has 16 divisors (see below), whose sum is σ = 9060480. Its totient is φ = 5587200.

The previous prime is 7218661. The next prime is 7218677. The reversal of 7218673 is 3768127.

It is a cyclic number.

It is not a de Polignac number, because 7218673 - 2⁹ = 7218161 is a prime.

7218673 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7218677) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 18363 + ... + 18751.

It is an arithmetic number, because the mean of its divisors is an integer number (566280).

Almost surely, 2^7218673 is an apocalyptic number.

It is an amenable number.

7218673 is a deficient number, since it is larger than the sum of its proper divisors (1841807).

7218673 is a wasteful number, since it uses less digits than its factorization.

7218673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its digits is 14112, while the sum is 34.

The square root of 7218673 is about 2686.7588280305. The cubic root of 7218673 is about 193.2646641448.

The spelling of 7218673 in words is "seven million, two hundred eighteen thousand, six hundred seventy-three".