220963693 has 4 divisors (see below), whose sum is σ = 221004828. Its totient is φ = 220922560.

The previous prime is 220963669. The next prime is 220963697. The reversal of 220963693 is 396369022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88322404 + 132641289 = 9398^2 + 11517^2 .

It is a cyclic number.

It is not a de Polignac number, because 220963693 - 2¹⁷ = 220832621 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220963697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11038 + ... + 23743.

It is an arithmetic number, because the mean of its divisors is an integer number (55251207).

Almost surely, 2^220963693 is an apocalyptic number.

It is an amenable number.

220963693 is a deficient number, since it is larger than the sum of its proper divisors (41135).

220963693 is an equidigital number, since it uses as much as digits as its factorization.

220963693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41134.

The product of its (nonzero) digits is 104976, while the sum is 40.

The square root of 220963693 is about 14864.8475606042. The cubic root of 220963693 is about 604.5612491795.

The spelling of 220963693 in words is "two hundred twenty million, nine hundred sixty-three thousand, six hundred ninety-three".