16066261 has 8 divisors (see below), whose sum is σ = 16935480. Its totient is φ = 15218112.

The previous prime is 16066199. The next prime is 16066279. The reversal of 16066261 is 16266061.

It can be written as a sum of positive squares in 4 ways, for example, as 8964036 + 7102225 = 2994^2 + 2665^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16066261 - 2¹³ = 16058069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16066291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3690 + ... + 6763.

It is an arithmetic number, because the mean of its divisors is an integer number (2116935).

Almost surely, 2^16066261 is an apocalyptic number.

It is an amenable number.

16066261 is a deficient number, since it is larger than the sum of its proper divisors (869219).

16066261 is a wasteful number, since it uses less digits than its factorization.

16066261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10535.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 16066261 is about 4008.2740674759. The cubic root of 16066261 is about 252.3315793505.

The spelling of 16066261 in words is "sixteen million, sixty-six thousand, two hundred sixty-one".