16599161 has 8 divisors (see below), whose sum is σ = 17227584. Its totient is φ = 15981840.

The previous prime is 16599133. The next prime is 16599181. The reversal of 16599161 is 16199561.

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 16599161 - 2⁶ = 16599097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16599181) 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, 335 + ... + 5771.

It is an arithmetic number, because the mean of its divisors is an integer number (2153448).

Almost surely, 2^16599161 is an apocalyptic number.

It is an amenable number.

16599161 is a deficient number, since it is larger than the sum of its proper divisors (628423).

16599161 is an equidigital number, since it uses as much as digits as its factorization.

16599161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551.

The product of its digits is 14580, while the sum is 38.

The square root of 16599161 is about 4074.2067939662. The cubic root of 16599161 is about 255.0911426088.

The spelling of 16599161 in words is "sixteen million, five hundred ninety-nine thousand, one hundred sixty-one".