197968887 has 8 divisors (see below), whose sum is σ = 293287280. Its totient is φ = 131979240.

The previous prime is 197968871. The next prime is 197968891. The reversal of 197968887 is 788869791.

It is not a de Polignac number, because 197968887 - 2⁴ = 197968871 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 (197968817) 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, 3666064 + ... + 3666117.

It is an arithmetic number, because the mean of its divisors is an integer number (36660910).

Almost surely, 2^197968887 is an apocalyptic number.

197968887 is a deficient number, since it is larger than the sum of its proper divisors (95318393).

197968887 is an equidigital number, since it uses as much as digits as its factorization.

197968887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7332190 (or 7332184 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 63.

The square root of 197968887 is about 14070.1416837216. The cubic root of 197968887 is about 582.8171378716.

The spelling of 197968887 in words is "one hundred ninety-seven million, nine hundred sixty-eight thousand, eight hundred eighty-seven".