220949653 has 2 divisors, whose sum is σ = 220949654. Its totient is φ = 220949652.

The previous prime is 220949591. The next prime is 220949671. The reversal of 220949653 is 356949022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164429329 + 56520324 = 12823^2 + 7518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220949653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220949683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110474826 + 110474827.

It is an arithmetic number, because the mean of its divisors is an integer number (110474827).

Almost surely, 2^220949653 is an apocalyptic number.

It is an amenable number.

220949653 is a deficient number, since it is larger than the sum of its proper divisors (1).

220949653 is an equidigital number, since it uses as much as digits as its factorization.

220949653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 220949653 is about 14864.3752980070. The cubic root of 220949653 is about 604.5484443312.

The spelling of 220949653 in words is "two hundred twenty million, nine hundred forty-nine thousand, six hundred fifty-three".