197072668 has 12 divisors (see below), whose sum is σ = 371406280. Its totient is φ = 90956592.

The previous prime is 197072663. The next prime is 197072677. The reversal of 197072668 is 866270791.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197072663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1894878 + ... + 1894981.

Almost surely, 2^197072668 is an apocalyptic number.

It is an amenable number.

197072668 is a deficient number, since it is larger than the sum of its proper divisors (174333612).

197072668 is a wasteful number, since it uses less digits than its factorization.

197072668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789876 (or 3789874 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 197072668 is about 14038.2572992519. The cubic root of 197072668 is about 581.9363227097.

The spelling of 197072668 in words is "one hundred ninety-seven million, seventy-two thousand, six hundred sixty-eight".