220034666 has 4 divisors (see below), whose sum is σ = 330052002. Its totient is φ = 110017332.

The previous prime is 220034663. The next prime is 220034699. The reversal of 220034666 is 666430022.

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., 214007641 + 6027025 = 14629^2 + 2455^2 .

It is not an unprimeable number, because it can be changed into a prime (220034663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55008665 + ... + 55008668.

Almost surely, 2^220034666 is an apocalyptic number.

220034666 is a deficient number, since it is larger than the sum of its proper divisors (110017336).

220034666 is a wasteful number, since it uses less digits than its factorization.

220034666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110017335.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 220034666 is about 14833.5655187821. The cubic root of 220034666 is about 603.7127799055.

Adding to 220034666 its reverse (666430022), we get a palindrome (886464688).

The spelling of 220034666 in words is "two hundred twenty million, thirty-four thousand, six hundred sixty-six".