16222566 has 8 divisors (see below), whose sum is σ = 32445144. Its totient is φ = 5407520.

The previous prime is 16222553. The next prime is 16222631. The reversal of 16222566 is 66522261.

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

16222566 is an admirable number.

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, 1351875 + ... + 1351886.

It is an arithmetic number, because the mean of its divisors is an integer number (4055643).

Almost surely, 2^16222566 is an apocalyptic number.

16222566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16222566 is a wasteful number, since it uses less digits than its factorization.

16222566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2703766.

The product of its digits is 8640, while the sum is 30.

The square root of 16222566 is about 4027.7246678491. The cubic root of 16222566 is about 253.1472321275.

The spelling of 16222566 in words is "sixteen million, two hundred twenty-two thousand, five hundred sixty-six".