195666404 has 12 divisors (see below), whose sum is σ = 344684928. Its totient is φ = 97185000.

The previous prime is 195666403. The next prime is 195666409. The reversal of 195666404 is 404666591.

195666404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (195666403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161372 + ... + 162579.

It is an arithmetic number, because the mean of its divisors is an integer number (28723744).

Almost surely, 2^195666404 is an apocalyptic number.

It is an amenable number.

195666404 is a deficient number, since it is larger than the sum of its proper divisors (149018524).

195666404 is a wasteful number, since it uses less digits than its factorization.

195666404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324106 (or 324104 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 195666404 is about 13988.0807832955. The cubic root of 195666404 is about 580.5488304803.

The spelling of 195666404 in words is "one hundred ninety-five million, six hundred sixty-six thousand, four hundred four".