16011660 has 96 divisors (see below), whose sum is σ = 52093440. Its totient is φ = 3598848.

The previous prime is 16011581. The next prime is 16011679. The reversal of 16011660 is 6611061.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27856 + ... + 28424.

It is an arithmetic number, because the mean of its divisors is an integer number (542640).

Almost surely, 2^16011660 is an apocalyptic number.

16011660 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 16011660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26046720).

16011660 is an abundant number, since it is smaller than the sum of its proper divisors (36081780).

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

16011660 is a wasteful number, since it uses less digits than its factorization.

16011660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 16011660 is about 4001.4572345584. The cubic root of 16011660 is about 252.0454062801.

The spelling of 16011660 in words is "sixteen million, eleven thousand, six hundred sixty".