999966204 has 36 divisors (see below), whose sum is σ = 2586479896. Its totient is φ = 325569888.

The previous prime is 999966203. The next prime is 999966221. The reversal of 999966204 is 402669999.

999966204 is a `hidden beast` number, since 9 + 9 + 9 + 9 + 6 + 620 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999966203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321439 + ... + 324534.

Almost surely, 2^999966204 is an apocalyptic number.

It is an amenable number.

999966204 is an abundant number, since it is smaller than the sum of its proper divisors (1586513692).

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

999966204 is a wasteful number, since it uses less digits than its factorization.

999966204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646026 (or 646021 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The square root of 999966204 is about 31622.2422354899. The cubic root of 999966204 is about 999.9887345398.

The spelling of 999966204 in words is "nine hundred ninety-nine million, nine hundred sixty-six thousand, two hundred four".