16649334 has 64 divisors (see below), whose sum is σ = 40985280. Its totient is φ = 4976640.

The previous prime is 16649333. The next prime is 16649351. The reversal of 16649334 is 43394661.

16649334 is a `hidden beast` number, since 1 + 6 + 649 + 3 + 3 + 4 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16649333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25654 + ... + 26294.

It is an arithmetic number, because the mean of its divisors is an integer number (640395).

Almost surely, 2^16649334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16649334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20492640).

16649334 is an abundant number, since it is smaller than the sum of its proper divisors (24335946).

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

16649334 is a wasteful number, since it uses less digits than its factorization.

16649334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 696 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 16649334 is about 4080.3595429815. The cubic root of 16649334 is about 255.3478988450.

The spelling of 16649334 in words is "sixteen million, six hundred forty-nine thousand, three hundred thirty-four".