16566460 has 48 divisors (see below), whose sum is σ = 36197280. Its totient is φ = 6364160.

The previous prime is 16566457. The next prime is 16566467. The reversal of 16566460 is 6466561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16566467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72867 + ... + 73093.

It is an arithmetic number, because the mean of its divisors is an integer number (754110).

Almost surely, 2^16566460 is an apocalyptic number.

16566460 is a gapful number since it is divisible by the number (10) 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 16566460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18098640).

16566460 is an abundant number, since it is smaller than the sum of its proper divisors (19630820).

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

16566460 is a wasteful number, since it uses less digits than its factorization.

16566460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 16566460 is about 4070.1916416798. The cubic root of 16566460 is about 254.9235192912.

The spelling of 16566460 in words is "sixteen million, five hundred sixty-six thousand, four hundred sixty".