8372213 has 4 divisors (see below), whose sum is σ = 8660940. Its totient is φ = 8083488.

The previous prime is 8372191. The next prime is 8372219. The reversal of 8372213 is 3122738.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3073009 + 5299204 = 1753^2 + 2302^2 .

It is a cyclic number.

It is not a de Polignac number, because 8372213 - 2¹⁶ = 8306677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8372219) 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, 144320 + ... + 144377.

It is an arithmetic number, because the mean of its divisors is an integer number (2165235).

Almost surely, 2^8372213 is an apocalyptic number.

It is an amenable number.

8372213 is a deficient number, since it is larger than the sum of its proper divisors (288727).

8372213 is a wasteful number, since it uses less digits than its factorization.

8372213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288726.

The product of its digits is 2016, while the sum is 26.

The square root of 8372213 is about 2893.4776653709. The cubic root of 8372213 is about 203.0548760861.

The spelling of 8372213 in words is "eight million, three hundred seventy-two thousand, two hundred thirteen".