16640622 has 24 divisors (see below), whose sum is σ = 36737064. Its totient is φ = 5441904.

The previous prime is 16640621. The next prime is 16640647. The reversal of 16640622 is 22604661.

It is a happy number.

16640622 is a `hidden beast` number, since 16 + 640 + 6 + 2 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16640621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7768 + ... + 9675.

It is an arithmetic number, because the mean of its divisors is an integer number (1530711).

Almost surely, 2^16640622 is an apocalyptic number.

16640622 is an abundant number, since it is smaller than the sum of its proper divisors (20096442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16640622 is a wasteful number, since it uses less digits than its factorization.

16640622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17504 (or 17501 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 16640622 is about 4079.2918503093. The cubic root of 16640622 is about 255.3033529385.

The spelling of 16640622 in words is "sixteen million, six hundred forty thousand, six hundred twenty-two".