16666536 has 64 divisors (see below), whose sum is σ = 44035200. Its totient is φ = 5246208.

The previous prime is 16666523. The next prime is 16666547. The reversal of 16666536 is 63566661.

It is a junction number, because it is equal to n+sod(n) for n = 16666494 and 16666503.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60030 + ... + 60306.

It is an arithmetic number, because the mean of its divisors is an integer number (688050).

Almost surely, 2^16666536 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 16666536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22017600).

16666536 is an abundant number, since it is smaller than the sum of its proper divisors (27368664).

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

16666536 is a wasteful number, since it uses less digits than its factorization.

16666536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 414 counting only the distinct ones).

The product of its digits is 116640, while the sum is 39.

The square root of 16666536 is about 4082.4669012743. The cubic root of 16666536 is about 255.4358099221.

The spelling of 16666536 in words is "sixteen million, six hundred sixty-six thousand, five hundred thirty-six".