16222665 has 16 divisors (see below), whose sum is σ = 26011008. Its totient is φ = 8633856.

The previous prime is 16222663. The next prime is 16222667. The reversal of 16222665 is 56622261.

It is an interprime number because it is at equal distance from previous prime (16222663) and next prime (16222667).

It is not a de Polignac number, because 16222665 - 2¹ = 16222663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16222663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9292 + ... + 10898.

It is an arithmetic number, because the mean of its divisors is an integer number (1625688).

Almost surely, 2^16222665 is an apocalyptic number.

16222665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16222665 is a deficient number, since it is larger than the sum of its proper divisors (9788343).

16222665 is a wasteful number, since it uses less digits than its factorization.

16222665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288.

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

The square root of 16222665 is about 4027.7369576476. The cubic root of 16222665 is about 253.1477470794.

The spelling of 16222665 in words is "sixteen million, two hundred twenty-two thousand, six hundred sixty-five".