197090285 has 16 divisors (see below), whose sum is σ = 276583296. Its totient is φ = 132003648.

The previous prime is 197090279. The next prime is 197090353. The reversal of 197090285 is 582090791.

It is not a de Polignac number, because 197090285 - 2⁴ = 197090269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63974 + ... + 66983.

It is an arithmetic number, because the mean of its divisors is an integer number (17286456).

Almost surely, 2^197090285 is an apocalyptic number.

It is an amenable number.

197090285 is a deficient number, since it is larger than the sum of its proper divisors (79493011).

197090285 is a wasteful number, since it uses less digits than its factorization.

197090285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131012.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 197090285 is about 14038.8847491530. The cubic root of 197090285 is about 581.9536626193.

The spelling of 197090285 in words is "one hundred ninety-seven million, ninety thousand, two hundred eighty-five".