220995629 has 2 divisors, whose sum is σ = 220995630. Its totient is φ = 220995628.

The previous prime is 220995613. The next prime is 220995679. The reversal of 220995629 is 926599022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121594729 + 99400900 = 11027^2 + 9970^2 .

It is a cyclic number.

It is not a de Polignac number, because 220995629 - 2⁴ = 220995613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220995629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220995679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110497814 + 110497815.

It is an arithmetic number, because the mean of its divisors is an integer number (110497815).

Almost surely, 2^220995629 is an apocalyptic number.

It is an amenable number.

220995629 is a deficient number, since it is larger than the sum of its proper divisors (1).

220995629 is an equidigital number, since it uses as much as digits as its factorization.

220995629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 220995629 is about 14865.9217339525. The cubic root of 220995629 is about 604.5903736294.

The spelling of 220995629 in words is "two hundred twenty million, nine hundred ninety-five thousand, six hundred twenty-nine".