197006689 has 4 divisors (see below), whose sum is σ = 214916400. Its totient is φ = 179096980.

The previous prime is 197006683. The next prime is 197006713. The reversal of 197006689 is 986600791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 197006689 - 2¹³ = 196998497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197006683) 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, 8954839 + ... + 8954860.

It is an arithmetic number, because the mean of its divisors is an integer number (53729100).

Almost surely, 2^197006689 is an apocalyptic number.

It is an amenable number.

197006689 is a deficient number, since it is larger than the sum of its proper divisors (17909711).

197006689 is a wasteful number, since it uses less digits than its factorization.

197006689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17909710.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 197006689 is about 14035.9071313542. The cubic root of 197006689 is about 581.8713722819.

The spelling of 197006689 in words is "one hundred ninety-seven million, six thousand, six hundred eighty-nine".