16066647 has 16 divisors (see below), whose sum is σ = 25056000. Its totient is φ = 10147032.

The previous prime is 16066639. The next prime is 16066651. The reversal of 16066647 is 74666061.

It is not a de Polignac number, because 16066647 - 2³ = 16066639 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16066657) 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 15 ways as a sum of consecutive naturals, for example, 15147 + ... + 16172.

It is an arithmetic number, because the mean of its divisors is an integer number (1566000).

Almost surely, 2^16066647 is an apocalyptic number.

16066647 is a deficient number, since it is larger than the sum of its proper divisors (8989353).

16066647 is a wasteful number, since it uses less digits than its factorization.

16066647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31347 (or 31341 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 16066647 is about 4008.3222175868. The cubic root of 16066647 is about 252.3336001320. Note that the first 3 decimals are identical.

The spelling of 16066647 in words is "sixteen million, sixty-six thousand, six hundred forty-seven".