16601089 has 8 divisors (see below), whose sum is σ = 17419520. Its totient is φ = 15800400.

The previous prime is 16601069. The next prime is 16601093. The reversal of 16601089 is 98010661.

It is a happy number.

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 16601089 - 2¹¹ = 16599041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 16601089.

It is not an unprimeable number, because it can be changed into a prime (16601029) 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, 2499 + ... + 6280.

It is an arithmetic number, because the mean of its divisors is an integer number (2177440).

It is a Proth number, since it is equal to 4053 ⋅ 2¹² + 1 and 4053 < 2¹².

Almost surely, 2^16601089 is an apocalyptic number.

It is an amenable number.

16601089 is a deficient number, since it is larger than the sum of its proper divisors (818431).

16601089 is an equidigital number, since it uses as much as digits as its factorization.

16601089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8871.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 16601089 is about 4074.4433975698. The cubic root of 16601089 is about 255.1010185433.

The spelling of 16601089 in words is "sixteen million, six hundred one thousand, eighty-nine".