19996604 has 6 divisors (see below), whose sum is σ = 34994064. Its totient is φ = 9998300.

The previous prime is 19996597. The next prime is 19996621. The reversal of 19996604 is 40669991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499572 + ... + 2499579.

It is an arithmetic number, because the mean of its divisors is an integer number (5832344).

Almost surely, 2^19996604 is an apocalyptic number.

It is an amenable number.

19996604 is a deficient number, since it is larger than the sum of its proper divisors (14997460).

19996604 is a wasteful number, since it uses less digits than its factorization.

19996604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4999155 (or 4999153 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 19996604 is about 4471.7562545380. The cubic root of 19996604 is about 271.4263971861.

The spelling of 19996604 in words is "nineteen million, nine hundred ninety-six thousand, six hundred four".