16661324 has 6 divisors (see below), whose sum is σ = 29157324. Its totient is φ = 8330660.

The previous prime is 16661321. The next prime is 16661363. The reversal of 16661324 is 42316661.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16661321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2082662 + ... + 2082669.

It is an arithmetic number, because the mean of its divisors is an integer number (4859554).

Almost surely, 2^16661324 is an apocalyptic number.

It is an amenable number.

16661324 is a deficient number, since it is larger than the sum of its proper divisors (12496000).

16661324 is a wasteful number, since it uses less digits than its factorization.

16661324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165335 (or 4165333 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 16661324 is about 4081.8285118314. The cubic root of 16661324 is about 255.4091803084.

Adding to 16661324 its reverse (42316661), we get a palindrome (58977985).

The spelling of 16661324 in words is "sixteen million, six hundred sixty-one thousand, three hundred twenty-four".