197423637 has 8 divisors (see below), whose sum is σ = 263706336. Its totient is φ = 131378352.

The previous prime is 197423599. The next prime is 197423683. The reversal of 197423637 is 736324791.

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

It is not a de Polignac number, because 197423637 - 2⁶ = 197423573 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197423137) 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 7 ways as a sum of consecutive naturals, for example, 57403 + ... + 60744.

It is an arithmetic number, because the mean of its divisors is an integer number (32963292).

Almost surely, 2^197423637 is an apocalyptic number.

It is an amenable number.

197423637 is a deficient number, since it is larger than the sum of its proper divisors (66282699).

197423637 is a wasteful number, since it uses less digits than its factorization.

197423637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118707.

The product of its digits is 190512, while the sum is 42.

The square root of 197423637 is about 14050.7521862710. The cubic root of 197423637 is about 582.2815768838.

The spelling of 197423637 in words is "one hundred ninety-seven million, four hundred twenty-three thousand, six hundred thirty-seven".