197563871 has 8 divisors (see below), whose sum is σ = 203439264. Its totient is φ = 191738880.

The previous prime is 197563841. The next prime is 197563901. The reversal of 197563871 is 178365791.

It is an interprime number because it is at equal distance from previous prime (197563841) and next prime (197563901).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 197563871 - 2¹⁴ = 197547487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197563841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4571 + ... + 20396.

It is an arithmetic number, because the mean of its divisors is an integer number (25429908).

Almost surely, 2^197563871 is an apocalyptic number.

197563871 is a deficient number, since it is larger than the sum of its proper divisors (5875393).

197563871 is a wasteful number, since it uses less digits than its factorization.

197563871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25201.

The product of its digits is 317520, while the sum is 47.

The square root of 197563871 is about 14055.7415670608. The cubic root of 197563871 is about 582.4194130443.

The spelling of 197563871 in words is "one hundred ninety-seven million, five hundred sixty-three thousand, eight hundred seventy-one".