220624445 has 4 divisors (see below), whose sum is σ = 264749340. Its totient is φ = 176499552.

The previous prime is 220624433. The next prime is 220624483. The reversal of 220624445 is 544426022.

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 99580441 + 121044004 = 9979^2 + 11002^2 .

It is a cyclic number.

It is not a de Polignac number, because 220624445 - 2⁴ = 220624429 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, 22062440 + ... + 22062449.

It is an arithmetic number, because the mean of its divisors is an integer number (66187335).

Almost surely, 2^220624445 is an apocalyptic number.

It is an amenable number.

220624445 is a deficient number, since it is larger than the sum of its proper divisors (44124895).

220624445 is an equidigital number, since it uses as much as digits as its factorization.

220624445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44124894.

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 220624445 is about 14853.4320949739. The cubic root of 220624445 is about 604.2516941818.

The spelling of 220624445 in words is "two hundred twenty million, six hundred twenty-four thousand, four hundred forty-five".