16603996 has 24 divisors (see below), whose sum is σ = 29799504. Its totient is φ = 8092800.

The previous prime is 16603991. The next prime is 16603997. The reversal of 16603996 is 69930661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16603991) 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, 29211 + ... + 29773.

It is an arithmetic number, because the mean of its divisors is an integer number (1241646).

Almost surely, 2^16603996 is an apocalyptic number.

It is an amenable number.

16603996 is a deficient number, since it is larger than the sum of its proper divisors (13195508).

16603996 is a wasteful number, since it uses less digits than its factorization.

16603996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 739 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 16603996 is about 4074.8001177972. The cubic root of 16603996 is about 255.1159078352.

The spelling of 16603996 in words is "sixteen million, six hundred three thousand, nine hundred ninety-six".