197485287 has 8 divisors (see below), whose sum is σ = 263387904. Its totient is φ = 131619768.

The previous prime is 197485279. The next prime is 197485289. The reversal of 197485287 is 782584791.

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

It is not a de Polignac number, because 197485287 - 2³ = 197485279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197485289) 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, 7468 + ... + 21230.

It is an arithmetic number, because the mean of its divisors is an integer number (32923488).

Almost surely, 2^197485287 is an apocalyptic number.

197485287 is a deficient number, since it is larger than the sum of its proper divisors (65902617).

197485287 is a wasteful number, since it uses less digits than its factorization.

197485287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18549.

The product of its digits is 1128960, while the sum is 51.

The square root of 197485287 is about 14052.9458477573. The cubic root of 197485287 is about 582.3421807773.

The spelling of 197485287 in words is "one hundred ninety-seven million, four hundred eighty-five thousand, two hundred eighty-seven".