16666464 has 48 divisors (see below), whose sum is σ = 44126208. Its totient is φ = 5507712.

The previous prime is 16666453. The next prime is 16666487. The reversal of 16666464 is 46466661.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11509 + ... + 12875.

It is an arithmetic number, because the mean of its divisors is an integer number (919296).

Almost surely, 2^16666464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16666464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22063104).

16666464 is an abundant number, since it is smaller than the sum of its proper divisors (27459744).

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

16666464 is a wasteful number, since it uses less digits than its factorization.

16666464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507 (or 1499 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The square root of 16666464 is about 4082.4580830671. The cubic root of 16666464 is about 255.4354420911.

The spelling of 16666464 in words is "sixteen million, six hundred sixty-six thousand, four hundred sixty-four".