196668605 has 12 divisors (see below), whose sum is σ = 274533660. Its totient is φ = 134858304.

The previous prime is 196668599. The next prime is 196668613. The reversal of 196668605 is 506866691.

It can be written as a sum of positive squares in 2 ways, for example, as 20894041 + 175774564 = 4571^2 + 13258^2 .

It is not a de Polignac number, because 196668605 - 2²² = 192474301 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 196668605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401120 + ... + 401609.

It is an arithmetic number, because the mean of its divisors is an integer number (22877805).

Almost surely, 2^196668605 is an apocalyptic number.

It is an amenable number.

196668605 is a deficient number, since it is larger than the sum of its proper divisors (77865055).

196668605 is an equidigital number, since it uses as much as digits as its factorization.

196668605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802748 (or 802741 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 196668605 is about 14023.8584205632. The cubic root of 196668605 is about 581.5383310691.

The spelling of 196668605 in words is "one hundred ninety-six million, six hundred sixty-eight thousand, six hundred five".