197552643 has 4 divisors (see below), whose sum is σ = 263403528. Its totient is φ = 131701760.

The previous prime is 197552627. The next prime is 197552647. The reversal of 197552643 is 346255791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 197552643 - 2⁴ = 197552627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197552595 and 197552604.

It is not an unprimeable number, because it can be changed into a prime (197552647) by changing a digit.

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, 32925438 + ... + 32925443.

It is an arithmetic number, because the mean of its divisors is an integer number (65850882).

Almost surely, 2^197552643 is an apocalyptic number.

197552643 is a deficient number, since it is larger than the sum of its proper divisors (65850885).

197552643 is an equidigital number, since it uses as much as digits as its factorization.

197552643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65850884.

The product of its digits is 226800, while the sum is 42.

The square root of 197552643 is about 14055.3421516518. The cubic root of 197552643 is about 582.4083794327.

The spelling of 197552643 in words is "one hundred ninety-seven million, five hundred fifty-two thousand, six hundred forty-three".