220635645 has 8 divisors (see below), whose sum is σ = 353017056. Its totient is φ = 117672336.

The previous prime is 220635641. The next prime is 220635671. The reversal of 220635645 is 546536022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220635645 - 2² = 220635641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220635641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7354507 + ... + 7354536.

It is an arithmetic number, because the mean of its divisors is an integer number (44127132).

Almost surely, 2^220635645 is an apocalyptic number.

It is an amenable number.

220635645 is a deficient number, since it is larger than the sum of its proper divisors (132381411).

220635645 is a wasteful number, since it uses less digits than its factorization.

220635645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14709051.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 220635645 is about 14853.8091074310. The cubic root of 220635645 is about 604.2619189546.

The spelling of 220635645 in words is "two hundred twenty million, six hundred thirty-five thousand, six hundred forty-five".