8223137 has 8 divisors (see below), whose sum is σ = 8886696. Its totient is φ = 7564032.

The previous prime is 8223133. The next prime is 8223157. The reversal of 8223137 is 7313228.

It can be written as a sum of positive squares in 4 ways, for example, as 163216 + 8059921 = 404^2 + 2839^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8223137 - 2² = 8223133 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8223133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3443 + ... + 5319.

It is an arithmetic number, because the mean of its divisors is an integer number (1110837).

Almost surely, 2^8223137 is an apocalyptic number.

It is an amenable number.

8223137 is a deficient number, since it is larger than the sum of its proper divisors (663559).

8223137 is a wasteful number, since it uses less digits than its factorization.

8223137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227.

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

The square root of 8223137 is about 2867.6012623794. The cubic root of 8223137 is about 201.8424497740.

Subtracting from 8223137 its reverse (7313228), we obtain a palindrome (909909).

The spelling of 8223137 in words is "eight million, two hundred twenty-three thousand, one hundred thirty-seven".