197876664 has 24 divisors (see below), whose sum is σ = 535916160. Its totient is φ = 65958864.

The previous prime is 197876641. The next prime is 197876681. The reversal of 197876664 is 466678791.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 197876664.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1374072 + ... + 1374215.

It is an arithmetic number, because the mean of its divisors is an integer number (22329840).

Almost surely, 2^197876664 is an apocalyptic number.

It is an amenable number.

197876664 is an abundant number, since it is smaller than the sum of its proper divisors (338039496).

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

197876664 is a wasteful number, since it uses less digits than its factorization.

197876664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748299 (or 2748292 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 197876664 is about 14066.8640428491. The cubic root of 197876664 is about 582.7266228178.

The spelling of 197876664 in words is "one hundred ninety-seven million, eight hundred seventy-six thousand, six hundred sixty-four".