197972071 has 4 divisors (see below), whose sum is σ = 215969544. Its totient is φ = 179974600.

The previous prime is 197972059. The next prime is 197972083. The reversal of 197972071 is 170279791.

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

It is an interprime number because it is at equal distance from previous prime (197972059) and next prime (197972083).

It is a cyclic number.

It is not a de Polignac number, because 197972071 - 2¹⁵ = 197939303 is a prime.

It is a super-3 number, since 3×197972071³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197972051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8998720 + ... + 8998741.

It is an arithmetic number, because the mean of its divisors is an integer number (53992386).

Almost surely, 2^197972071 is an apocalyptic number.

197972071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

197972071 is a deficient number, since it is larger than the sum of its proper divisors (17997473).

197972071 is a wasteful number, since it uses less digits than its factorization.

197972071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17997472.

The product of its (nonzero) digits is 55566, while the sum is 43.

The square root of 197972071 is about 14070.2548306703. The cubic root of 197972071 is about 582.8202624026.

It can be divided in two parts, 1979720 and 71, that added together give a palindrome (1979791).

The spelling of 197972071 in words is "one hundred ninety-seven million, nine hundred seventy-two thousand, seventy-one".