16606261 has 8 divisors (see below), whose sum is σ = 19246464. Its totient is φ = 14033040.

The previous prime is 16606237. The next prime is 16606267. The reversal of 16606261 is 16260661.

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

It is not a de Polignac number, because 16606261 - 2¹⁵ = 16573493 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 (16606267) 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, 16210 + ... + 17203.

It is an arithmetic number, because the mean of its divisors is an integer number (2405808).

Almost surely, 2^16606261 is an apocalyptic number.

It is an amenable number.

16606261 is a deficient number, since it is larger than the sum of its proper divisors (2640203).

16606261 is an equidigital number, since it uses as much as digits as its factorization.

16606261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33491.

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

The square root of 16606261 is about 4075.0780360626. The cubic root of 16606261 is about 255.1275076786.

It can be divided in two parts, 1660 and 6261, that added together give a square (7921 = 89²).

The spelling of 16606261 in words is "sixteen million, six hundred six thousand, two hundred sixty-one".