220574066 has 4 divisors (see below), whose sum is σ = 330861102. Its totient is φ = 110287032.

The previous prime is 220574033. The next prime is 220574069. The reversal of 220574066 is 660475022.

220574066 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 219662041 + 912025 = 14821^2 + 955^2 .

It is not an unprimeable number, because it can be changed into a prime (220574069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55143515 + ... + 55143518.

Almost surely, 2^220574066 is an apocalyptic number.

220574066 is a deficient number, since it is larger than the sum of its proper divisors (110287036).

220574066 is a wasteful number, since it uses less digits than its factorization.

220574066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110287035.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 220574066 is about 14851.7361274701. The cubic root of 220574066 is about 604.2056975963.

The spelling of 220574066 in words is "two hundred twenty million, five hundred seventy-four thousand, sixty-six".