220246639 has 2 divisors, whose sum is σ = 220246640. Its totient is φ = 220246638.

The previous prime is 220246573. The next prime is 220246673. The reversal of 220246639 is 936642022.

It is a happy number.

220246639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (220246673) can be obtained adding 220246639 to its sum of digits (34).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220246639 - 2²¹ = 218149487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220246699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110123319 + 110123320.

It is an arithmetic number, because the mean of its divisors is an integer number (110123320).

Almost surely, 2^220246639 is an apocalyptic number.

220246639 is a deficient number, since it is larger than the sum of its proper divisors (1).

220246639 is an equidigital number, since it uses as much as digits as its factorization.

220246639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 220246639 is about 14840.7088442567. The cubic root of 220246639 is about 603.9065823024.

It can be divided in two parts, 2202 and 46639, that added together give a square (48841 = 221²).

The spelling of 220246639 in words is "two hundred twenty million, two hundred forty-six thousand, six hundred thirty-nine".