16606001 has 2 divisors, whose sum is σ = 16606002. Its totient is φ = 16606000.

The previous prime is 16605997. The next prime is 16606003. The reversal of 16606001 is 10060661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16394401 + 211600 = 4049^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 16606001 - 2² = 16605997 is a prime.

Together with 16606003, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (16606003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8303000 + 8303001.

It is an arithmetic number, because the mean of its divisors is an integer number (8303001).

Almost surely, 2^16606001 is an apocalyptic number.

It is an amenable number.

16606001 is a deficient number, since it is larger than the sum of its proper divisors (1).

16606001 is an equidigital number, since it uses as much as digits as its factorization.

16606001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 16606001 is about 4075.0461347082. The cubic root of 16606001 is about 255.1261761828.

Adding to 16606001 its reverse (10060661), we get a palindrome (26666662).

The spelling of 16606001 in words is "sixteen million, six hundred six thousand, one".