199720704 has 72 divisors (see below), whose sum is σ = 559565440. Its totient is φ = 63065088.

The previous prime is 199720687. The next prime is 199720711. The reversal of 199720704 is 407027991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7749 + ... + 21435.

Almost surely, 2^199720704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199720704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279782720).

199720704 is an abundant number, since it is smaller than the sum of its proper divisors (359844736).

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

199720704 is a wasteful number, since it uses less digits than its factorization.

199720704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13725 (or 13711 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 199720704 is about 14132.2575691218. The cubic root of 199720704 is about 584.5311986738.

The spelling of 199720704 in words is "one hundred ninety-nine million, seven hundred twenty thousand, seven hundred four".