197234561 has 8 divisors (see below), whose sum is σ = 208986120. Its totient is φ = 185499648.

The previous prime is 197234549. The next prime is 197234633. The reversal of 197234561 is 165432791.

It can be written as a sum of positive squares in 4 ways, for example, as 17272336 + 179962225 = 4156^2 + 13415^2 .

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

It is not a de Polignac number, because 197234561 - 2¹⁰ = 197233537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197234501) 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, 26945 + ... + 33473.

It is an arithmetic number, because the mean of its divisors is an integer number (26123265).

Almost surely, 2^197234561 is an apocalyptic number.

It is an amenable number.

197234561 is a deficient number, since it is larger than the sum of its proper divisors (11751559).

197234561 is a wasteful number, since it uses less digits than its factorization.

197234561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8323.

The product of its digits is 45360, while the sum is 38.

The square root of 197234561 is about 14044.0222514777. The cubic root of 197234561 is about 582.0956304953.

The spelling of 197234561 in words is "one hundred ninety-seven million, two hundred thirty-four thousand, five hundred sixty-one".