220352645 has 4 divisors (see below), whose sum is σ = 264423180. Its totient is φ = 176282112.

The previous prime is 220352603. The next prime is 220352651. The reversal of 220352645 is 546253022.

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 118766404 + 101586241 = 10898^2 + 10079^2 .

It is a cyclic number.

It is not a de Polignac number, because 220352645 - 2²⁶ = 153243781 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22035260 + ... + 22035269.

It is an arithmetic number, because the mean of its divisors is an integer number (66105795).

Almost surely, 2^220352645 is an apocalyptic number.

It is an amenable number.

220352645 is a deficient number, since it is larger than the sum of its proper divisors (44070535).

220352645 is an equidigital number, since it uses as much as digits as its factorization.

220352645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44070534.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 220352645 is about 14844.2798747531. The cubic root of 220352645 is about 604.0034546898.

The spelling of 220352645 in words is "two hundred twenty million, three hundred fifty-two thousand, six hundred forty-five".