220696643 has 2 divisors, whose sum is σ = 220696644. Its totient is φ = 220696642.

The previous prime is 220696607. The next prime is 220696673. The reversal of 220696643 is 346696022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220696643 - 2⁶ = 220696579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220696597 and 220696606.

It is not a weakly prime, because it can be changed into another prime (220696673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110348321 + 110348322.

It is an arithmetic number, because the mean of its divisors is an integer number (110348322).

Almost surely, 2^220696643 is an apocalyptic number.

220696643 is a deficient number, since it is larger than the sum of its proper divisors (1).

220696643 is an equidigital number, since it uses as much as digits as its factorization.

220696643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 220696643 is about 14855.8622435724. The cubic root of 220696643 is about 604.3175995502.

The spelling of 220696643 in words is "two hundred twenty million, six hundred ninety-six thousand, six hundred forty-three".