197164697 has 4 divisors (see below), whose sum is σ = 198488100. Its totient is φ = 195841296.

The previous prime is 197164687. The next prime is 197164699. The reversal of 197164697 is 796461791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 796461791 = 131 ⋅6079861.

It can be written as a sum of positive squares in 2 ways, for example, as 73599241 + 123565456 = 8579^2 + 11116^2 .

It is a cyclic number.

It is not a de Polignac number, because 197164697 - 2⁶ = 197164633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197164699) 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, 661478 + ... + 661775.

It is an arithmetic number, because the mean of its divisors is an integer number (49622025).

Almost surely, 2^197164697 is an apocalyptic number.

It is an amenable number.

197164697 is a deficient number, since it is larger than the sum of its proper divisors (1323403).

197164697 is a wasteful number, since it uses less digits than its factorization.

197164697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323402.

The product of its digits is 571536, while the sum is 50.

The square root of 197164697 is about 14041.5347095679. The cubic root of 197164697 is about 582.0268928264.

The spelling of 197164697 in words is "one hundred ninety-seven million, one hundred sixty-four thousand, six hundred ninety-seven".