16666496 has 128 divisors (see below), whose sum is σ = 44064000. Its totient is φ = 6082560.

The previous prime is 16666493. The next prime is 16666501. The reversal of 16666496 is 69466661.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (44).

Its product of digits (279936) is a multiple of the sum of its prime divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16666493) 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 15 ways as a sum of consecutive naturals, for example, 187220 + ... + 187308.

It is an arithmetic number, because the mean of its divisors is an integer number (344250).

Almost surely, 2^16666496 is an apocalyptic number.

16666496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16666496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22032000).

16666496 is an abundant number, since it is smaller than the sum of its proper divisors (27397504).

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

16666496 is a wasteful number, since it uses less digits than its factorization.

16666496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 128 counting only the distinct ones).

The product of its digits is 279936, while the sum is 44.

The square root of 16666496 is about 4082.4620022726. The cubic root of 16666496 is about 255.4356055717.

The spelling of 16666496 in words is "sixteen million, six hundred sixty-six thousand, four hundred ninety-six".