221463166 has 8 divisors (see below), whose sum is σ = 336745584. Its totient is φ = 109214640.

The previous prime is 221463161. The next prime is 221463191. The reversal of 221463166 is 661364122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221463161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758290 + ... + 758581.

It is an arithmetic number, because the mean of its divisors is an integer number (42093198).

Almost surely, 2^221463166 is an apocalyptic number.

221463166 is a deficient number, since it is larger than the sum of its proper divisors (115282418).

221463166 is a wasteful number, since it uses less digits than its factorization.

221463166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516946.

The product of its digits is 10368, while the sum is 31.

The square root of 221463166 is about 14881.6385522563. The cubic root of 221463166 is about 605.0164292148.

The spelling of 221463166 in words is "two hundred twenty-one million, four hundred sixty-three thousand, one hundred sixty-six".