16168660 has 48 divisors (see below), whose sum is σ = 35778960. Its totient is φ = 6128640.

The previous prime is 16168651. The next prime is 16168661. The reversal of 16168660 is 6686161.

It can be written as a sum of positive squares in 8 ways, for example, as 391876 + 15776784 = 626^2 + 3972^2 .

It is a super-2 number, since 2×16168660² = 522851132391200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16168661) 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, 35152 + ... + 35608.

It is an arithmetic number, because the mean of its divisors is an integer number (745395).

Almost surely, 2^16168660 is an apocalyptic number.

16168660 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 16168660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17889480).

16168660 is an abundant number, since it is smaller than the sum of its proper divisors (19610300).

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

16168660 is a wasteful number, since it uses less digits than its factorization.

16168660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 16168660 is about 4021.0272319396. The cubic root of 16168660 is about 252.8665264815.

The spelling of 16168660 in words is "sixteen million, one hundred sixty-eight thousand, six hundred sixty".