197868066 has 32 divisors (see below), whose sum is σ = 457109568. Its totient is φ = 56432640.

The previous prime is 197868053. The next prime is 197868101. The reversal of 197868066 is 660868791.

It is a happy number.

197868066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87055 + ... + 89298.

It is an arithmetic number, because the mean of its divisors is an integer number (14284674).

Almost surely, 2^197868066 is an apocalyptic number.

197868066 is an abundant number, since it is smaller than the sum of its proper divisors (259241502).

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

197868066 is a wasteful number, since it uses less digits than its factorization.

197868066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176386.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 197868066 is about 14066.5584277036. The cubic root of 197868066 is about 582.7181826175.

The spelling of 197868066 in words is "one hundred ninety-seven million, eight hundred sixty-eight thousand, sixty-six".