16661036 has 12 divisors (see below), whose sum is σ = 33322128. Its totient is φ = 7140432.

The previous prime is 16660979. The next prime is 16661083. The reversal of 16661036 is 63016661.

16661036 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297491 + ... + 297546.

It is an arithmetic number, because the mean of its divisors is an integer number (2776844).

Almost surely, 2^16661036 is an apocalyptic number.

It is an amenable number.

16661036 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16661036 is a wasteful number, since it uses less digits than its factorization.

16661036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595048 (or 595046 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 16661036 is about 4081.7932333718. The cubic root of 16661036 is about 255.4077086713.

Adding to 16661036 its reverse (63016661), we get a palindrome (79677697).

The spelling of 16661036 in words is "sixteen million, six hundred sixty-one thousand, thirty-six".