220240247 has 2 divisors, whose sum is σ = 220240248. Its totient is φ = 220240246.

The previous prime is 220240231. The next prime is 220240301. The reversal of 220240247 is 742042022.

It is a happy number.

220240247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220240247 - 2⁴ = 220240231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220240217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110120123 + 110120124.

It is an arithmetic number, because the mean of its divisors is an integer number (110120124).

Almost surely, 2^220240247 is an apocalyptic number.

220240247 is a deficient number, since it is larger than the sum of its proper divisors (1).

220240247 is an equidigital number, since it uses as much as digits as its factorization.

220240247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 220240247 is about 14840.4934890993. The cubic root of 220240247 is about 603.9007400518.

Adding to 220240247 its reverse (742042022), we get a palindrome (962282269).

The spelling of 220240247 in words is "two hundred twenty million, two hundred forty thousand, two hundred forty-seven".