215639223 has 16 divisors (see below), whose sum is σ = 289825536. Its totient is φ = 142611840.

The previous prime is 215639167. The next prime is 215639239. The reversal of 215639223 is 322936512.

It is not a de Polignac number, because 215639223 - 2¹⁴ = 215622839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215639323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265488 + ... + 266298.

It is an arithmetic number, because the mean of its divisors is an integer number (18114096).

Almost surely, 2^215639223 is an apocalyptic number.

215639223 is a deficient number, since it is larger than the sum of its proper divisors (74186313).

215639223 is a wasteful number, since it uses less digits than its factorization.

215639223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414.

The product of its digits is 19440, while the sum is 33.

The square root of 215639223 is about 14684.6594444679. The cubic root of 215639223 is about 599.6657610640.

The spelling of 215639223 in words is "two hundred fifteen million, six hundred thirty-nine thousand, two hundred twenty-three".