197530864 has 20 divisors (see below), whose sum is σ = 393060904. Its totient is φ = 96095808.

The previous prime is 197530849. The next prime is 197530873. The reversal of 197530864 is 468035791.

It is a self number, because there is not a number n which added to its sum of digits gives 197530864.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166242 + ... + 167425.

Almost surely, 2^197530864 is an apocalyptic number.

It is an amenable number.

197530864 is a deficient number, since it is larger than the sum of its proper divisors (195530040).

197530864 is a wasteful number, since it uses less digits than its factorization.

197530864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333712 (or 333706 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 197530864 is about 14054.5673714988. The cubic root of 197530864 is about 582.3869762967.

The spelling of 197530864 in words is "one hundred ninety-seven million, five hundred thirty thousand, eight hundred sixty-four".