196747691 has 6 divisors (see below), whose sum is σ = 228869820. Its totient is φ = 168640836.

The previous prime is 196747657. The next prime is 196747699.

196747691 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 196747691 - 2²⁶ = 129638827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196747699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2007581 + ... + 2007678.

It is an arithmetic number, because the mean of its divisors is an integer number (38144970).

Almost surely, 2^196747691 is an apocalyptic number.

196747691 is a deficient number, since it is larger than the sum of its proper divisors (32122129).

196747691 is an equidigital number, since it uses as much as digits as its factorization.

196747691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4015273 (or 4015266 counting only the distinct ones).

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

The square root of 196747691 is about 14026.6778319030. The cubic root of 196747691 is about 581.6162716178.

The spelling of 196747691 in words is "one hundred ninety-six million, seven hundred forty-seven thousand, six hundred ninety-one".