220568939 has 2 divisors, whose sum is σ = 220568940. Its totient is φ = 220568938.

The previous prime is 220568927. The next prime is 220568947. The reversal of 220568939 is 939865022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220568939 - 2⁴ = 220568923 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220568939.

It is not a weakly prime, because it can be changed into another prime (220568969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110284469 + 110284470.

It is an arithmetic number, because the mean of its divisors is an integer number (110284470).

Almost surely, 2^220568939 is an apocalyptic number.

220568939 is a deficient number, since it is larger than the sum of its proper divisors (1).

220568939 is an equidigital number, since it uses as much as digits as its factorization.

220568939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 220568939 is about 14851.5635203840. The cubic root of 220568939 is about 604.2010161958.

The spelling of 220568939 in words is "two hundred twenty million, five hundred sixty-eight thousand, nine hundred thirty-nine".