197691404 has 12 divisors (see below), whose sum is σ = 346157784. Its totient is φ = 98789184.

The previous prime is 197691401. The next prime is 197691437. The reversal of 197691404 is 404196791.

It is not an unprimeable number, because it can be changed into a prime (197691401) 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, 5702 + ... + 20685.

It is an arithmetic number, because the mean of its divisors is an integer number (28846482).

Almost surely, 2^197691404 is an apocalyptic number.

It is an amenable number.

197691404 is a deficient number, since it is larger than the sum of its proper divisors (148466380).

197691404 is a wasteful number, since it uses less digits than its factorization.

197691404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28264 (or 28262 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 197691404 is about 14060.2775221544. The cubic root of 197691404 is about 582.5447087568.

The spelling of 197691404 in words is "one hundred ninety-seven million, six hundred ninety-one thousand, four hundred four".