16611087 has 4 divisors (see below), whose sum is σ = 22148120. Its totient is φ = 11074056.

The previous prime is 16611059. The next prime is 16611097. The reversal of 16611087 is 78011661.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16611087 - 2¹² = 16606991 is a prime.

It is a super-2 number, since 2×16611087² = 551856422643138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16611097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2768512 + ... + 2768517.

It is an arithmetic number, because the mean of its divisors is an integer number (5537030).

Almost surely, 2^16611087 is an apocalyptic number.

16611087 is a deficient number, since it is larger than the sum of its proper divisors (5537033).

16611087 is an equidigital number, since it uses as much as digits as its factorization.

16611087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5537032.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 16611087 is about 4075.6701289481. The cubic root of 16611087 is about 255.1522197656.

The spelling of 16611087 in words is "sixteen million, six hundred eleven thousand, eighty-seven".