16642006 has 4 divisors (see below), whose sum is σ = 24963012. Its totient is φ = 8321002.

The previous prime is 16642001. The next prime is 16642007. The reversal of 16642006 is 60024661.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16642001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4160500 + ... + 4160503.

It is an arithmetic number, because the mean of its divisors is an integer number (6240753).

Almost surely, 2^16642006 is an apocalyptic number.

16642006 is a deficient number, since it is larger than the sum of its proper divisors (8321006).

16642006 is an equidigital number, since it uses as much as digits as its factorization.

16642006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8321005.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 16642006 is about 4079.4614840687. The cubic root of 16642006 is about 255.3104305996.

Adding to 16642006 its reverse (60024661), we get a palindrome (76666667).

The spelling of 16642006 in words is "sixteen million, six hundred forty-two thousand, six".