197698673 has 4 divisors (see below), whose sum is σ = 200406948. Its totient is φ = 194990400.

The previous prime is 197698663. The next prime is 197698681. The reversal of 197698673 is 376896791.

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 58859584 + 138839089 = 7672^2 + 11783^2 .

It is a cyclic number.

It is not a de Polignac number, because 197698673 - 2⁶ = 197698609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197698663) 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 3 ways as a sum of consecutive naturals, for example, 1354028 + ... + 1354173.

It is an arithmetic number, because the mean of its divisors is an integer number (50101737).

Almost surely, 2^197698673 is an apocalyptic number.

It is an amenable number.

197698673 is a deficient number, since it is larger than the sum of its proper divisors (2708275).

197698673 is an equidigital number, since it uses as much as digits as its factorization.

197698673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708274.

The product of its digits is 3429216, while the sum is 56.

The square root of 197698673 is about 14060.5360139648. The cubic root of 197698673 is about 582.5518486147.

The spelling of 197698673 in words is "one hundred ninety-seven million, six hundred ninety-eight thousand, six hundred seventy-three".