7213166 has 4 divisors (see below), whose sum is σ = 10819752. Its totient is φ = 3606582.

The previous prime is 7213139. The next prime is 7213169. The reversal of 7213166 is 6613127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6613127 = 137 ⋅48271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7213169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1803290 + ... + 1803293.

It is an arithmetic number, because the mean of its divisors is an integer number (2704938).

Almost surely, 2^7213166 is an apocalyptic number.

7213166 is a deficient number, since it is larger than the sum of its proper divisors (3606586).

7213166 is a wasteful number, since it uses less digits than its factorization.

7213166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606585.

The product of its digits is 1512, while the sum is 26.

The square root of 7213166 is about 2685.7337917225. The cubic root of 7213166 is about 193.2155055590.

The spelling of 7213166 in words is "seven million, two hundred thirteen thousand, one hundred sixty-six".