222500639 has 2 divisors, whose sum is σ = 222500640. Its totient is φ = 222500638.

The previous prime is 222500627. The next prime is 222500653. The reversal of 222500639 is 936005222.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222500639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222500699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111250319 + 111250320.

It is an arithmetic number, because the mean of its divisors is an integer number (111250320).

Almost surely, 2^222500639 is an apocalyptic number.

222500639 is a deficient number, since it is larger than the sum of its proper divisors (1).

222500639 is an equidigital number, since it uses as much as digits as its factorization.

222500639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 222500639 is about 14916.4553094896. The cubic root of 222500639 is about 605.9597171392.

The spelling of 222500639 in words is "two hundred twenty-two million, five hundred thousand, six hundred thirty-nine".