196670491 has 4 divisors (see below), whose sum is σ = 197303184. Its totient is φ = 196037800.

The previous prime is 196670483. The next prime is 196670521. The reversal of 196670491 is 194076691.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194076691 = 23 ⋅8438117.

It is a cyclic number.

It is not a de Polignac number, because 196670491 - 2³ = 196670483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196670191) 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, 315880 + ... + 316501.

It is an arithmetic number, because the mean of its divisors is an integer number (49325796).

Almost surely, 2^196670491 is an apocalyptic number.

196670491 is a deficient number, since it is larger than the sum of its proper divisors (632693).

196670491 is an equidigital number, since it uses as much as digits as its factorization.

196670491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632692.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 196670491 is about 14023.9256629519. The cubic root of 196670491 is about 581.5401899961.

The spelling of 196670491 in words is "one hundred ninety-six million, six hundred seventy thousand, four hundred ninety-one".