16066401 has 32 divisors (see below), whose sum is σ = 24235008. Its totient is φ = 9400320.

The previous prime is 16066361. The next prime is 16066403. The reversal of 16066401 is 10466061.

It is not a de Polignac number, because 16066401 - 2¹⁰ = 16065377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16066403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117205 + ... + 117341.

It is an arithmetic number, because the mean of its divisors is an integer number (757344).

Almost surely, 2^16066401 is an apocalyptic number.

It is an amenable number.

16066401 is a deficient number, since it is larger than the sum of its proper divisors (8168607).

16066401 is a wasteful number, since it uses less digits than its factorization.

16066401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 16066401 is about 4008.2915313136. The cubic root of 16066401 is about 252.3323122802.

The spelling of 16066401 in words is "sixteen million, sixty-six thousand, four hundred one".