16266646 has 8 divisors (see below), whose sum is σ = 26618184. Its totient is φ = 7393920.

The previous prime is 16266631. The next prime is 16266647. The reversal of 16266646 is 64666261.

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 (16266647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369675 + ... + 369718.

It is an arithmetic number, because the mean of its divisors is an integer number (3327273).

Almost surely, 2^16266646 is an apocalyptic number.

16266646 is a deficient number, since it is larger than the sum of its proper divisors (10351538).

16266646 is a wasteful number, since it uses less digits than its factorization.

16266646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739406.

The product of its digits is 62208, while the sum is 37.

The square root of 16266646 is about 4033.1930278627. The cubic root of 16266646 is about 253.3763088834.

It can be divided in two parts, 16 and 266646, that added together give a palindrome (266662).

The spelling of 16266646 in words is "sixteen million, two hundred sixty-six thousand, six hundred forty-six".