16665135 has 16 divisors (see below), whose sum is σ = 27525120. Its totient is φ = 8601120.

The previous prime is 16665043. The next prime is 16665137. The reversal of 16665135 is 53156661.

It is not a de Polignac number, because 16665135 - 2¹⁰ = 16664111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16665096 and 16665105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16665137) 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, 17455 + ... + 18384.

It is an arithmetic number, because the mean of its divisors is an integer number (1720320).

Almost surely, 2^16665135 is an apocalyptic number.

16665135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16665135 is a deficient number, since it is larger than the sum of its proper divisors (10859985).

16665135 is a wasteful number, since it uses less digits than its factorization.

16665135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35878.

The product of its digits is 16200, while the sum is 33.

The square root of 16665135 is about 4082.2953102391. The cubic root of 16665135 is about 255.4286523540.

The spelling of 16665135 in words is "sixteen million, six hundred sixty-five thousand, one hundred thirty-five".