16661296 has 40 divisors (see below), whose sum is σ = 33658064. Its totient is φ = 7983360.

The previous prime is 16661287. The next prime is 16661297. The reversal of 16661296 is 69216661.

It is not an unprimeable number, because it can be changed into a prime (16661297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41770 + ... + 42166.

Almost surely, 2^16661296 is an apocalyptic number.

16661296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16661296 is an abundant number, since it is smaller than the sum of its proper divisors (16996768).

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

16661296 is a wasteful number, since it uses less digits than its factorization.

16661296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 503 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 16661296 is about 4081.8250819946. The cubic root of 16661296 is about 255.4090372334.

The spelling of 16661296 in words is "sixteen million, six hundred sixty-one thousand, two hundred ninety-six".