197956673 has 4 divisors (see below), whose sum is σ = 198581460. Its totient is φ = 197331888.

The previous prime is 197956663. The next prime is 197956723. The reversal of 197956673 is 376659791.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20720704 + 177235969 = 4552^2 + 13313^2 .

It is a cyclic number.

It is not a de Polignac number, because 197956673 - 2⁶ = 197956609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197956663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311918 + ... + 312551.

It is an arithmetic number, because the mean of its divisors is an integer number (49645365).

Almost surely, 2^197956673 is an apocalyptic number.

It is an amenable number.

197956673 is a deficient number, since it is larger than the sum of its proper divisors (624787).

197956673 is an equidigital number, since it uses as much as digits as its factorization.

197956673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624786.

The product of its digits is 2143260, while the sum is 53.

The square root of 197956673 is about 14069.7076373321. The cubic root of 197956673 is about 582.8051516869.

The spelling of 197956673 in words is "one hundred ninety-seven million, nine hundred fifty-six thousand, six hundred seventy-three".