197623973 has 6 divisors (see below), whose sum is σ = 199610322. Its totient is φ = 195657200.

The previous prime is 197623949. The next prime is 197623991. The reversal of 197623973 is 379326791.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 115304644 + 82319329 = 10738^2 + 9073^2 .

It is not a de Polignac number, because 197623973 - 2⁸ = 197623717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197623903) 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 5 ways as a sum of consecutive naturals, for example, 515 + ... + 19887.

It is an arithmetic number, because the mean of its divisors is an integer number (33268387).

Almost surely, 2^197623973 is an apocalyptic number.

It is an amenable number.

197623973 is a deficient number, since it is larger than the sum of its proper divisors (1986349).

197623973 is an equidigital number, since it uses as much as digits as its factorization.

197623973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19575 (or 19474 counting only the distinct ones).

The product of its digits is 428652, while the sum is 47.

The square root of 197623973 is about 14057.8793919993. The cubic root of 197623973 is about 582.4784674020.

The spelling of 197623973 in words is "one hundred ninety-seven million, six hundred twenty-three thousand, nine hundred seventy-three".