197907071 has 4 divisors (see below), whose sum is σ = 199417944. Its totient is φ = 196396200.

The previous prime is 197907053. The next prime is 197907121. The reversal of 197907071 is 170709791.

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 197907071 - 2¹⁰ = 197906047 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 (197967071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755240 + ... + 755501.

It is an arithmetic number, because the mean of its divisors is an integer number (49854486).

Almost surely, 2^197907071 is an apocalyptic number.

197907071 is a deficient number, since it is larger than the sum of its proper divisors (1510873).

197907071 is a wasteful number, since it uses less digits than its factorization.

197907071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510872.

The product of its (nonzero) digits is 27783, while the sum is 41.

The square root of 197907071 is about 14067.9448037018. The cubic root of 197907071 is about 582.7564697951.

The spelling of 197907071 in words is "one hundred ninety-seven million, nine hundred seven thousand, seventy-one".