196669997 has 4 divisors (see below), whose sum is σ = 196706400. Its totient is φ = 196633596.

The previous prime is 196669981. The next prime is 196669999. The reversal of 196669997 is 799966691.

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 196669997 - 2⁴ = 196669981 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 (196669999) 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, 8303 + ... + 21500.

It is an arithmetic number, because the mean of its divisors is an integer number (49176600).

Almost surely, 2^196669997 is an apocalyptic number.

It is an amenable number.

196669997 is a deficient number, since it is larger than the sum of its proper divisors (36403).

196669997 is an equidigital number, since it uses as much as digits as its factorization.

196669997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36402.

The product of its digits is 9920232, while the sum is 62.

The square root of 196669997 is about 14023.9080501834. The cubic root of 196669997 is about 581.5397030885.

The spelling of 196669997 in words is "one hundred ninety-six million, six hundred sixty-nine thousand, nine hundred ninety-seven".