197800664 has 32 divisors (see below), whose sum is σ = 379080000. Its totient is φ = 96724992.

The previous prime is 197800657. The next prime is 197800679. The reversal of 197800664 is 466008791.

197800664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189857 + ... + 190895.

It is an arithmetic number, because the mean of its divisors is an integer number (11846250).

Almost surely, 2^197800664 is an apocalyptic number.

It is an amenable number.

197800664 is a deficient number, since it is larger than the sum of its proper divisors (181279336).

197800664 is a wasteful number, since it uses less digits than its factorization.

197800664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 197800664 is about 14064.1623995174. The cubic root of 197800664 is about 582.6520091779.

The spelling of 197800664 in words is "one hundred ninety-seven million, eight hundred thousand, six hundred sixty-four".