196723477 has 4 divisors (see below), whose sum is σ = 197489196. Its totient is φ = 195957760.

The previous prime is 196723441. The next prime is 196723481. The reversal of 196723477 is 774327691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 774327691 = 19 ⋅40754089.

It can be written as a sum of positive squares in 2 ways, for example, as 143856036 + 52867441 = 11994^2 + 7271^2 .

It is a cyclic number.

It is not a de Polignac number, because 196723477 - 2¹⁹ = 196199189 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 (196720477) 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, 382474 + ... + 382987.

It is an arithmetic number, because the mean of its divisors is an integer number (49372299).

Almost surely, 2^196723477 is an apocalyptic number.

It is an amenable number.

196723477 is a deficient number, since it is larger than the sum of its proper divisors (765719).

196723477 is an equidigital number, since it uses as much as digits as its factorization.

196723477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765718.

The product of its digits is 444528, while the sum is 46.

The square root of 196723477 is about 14025.8146643965. The cubic root of 196723477 is about 581.5924105429.

The spelling of 196723477 in words is "one hundred ninety-six million, seven hundred twenty-three thousand, four hundred seventy-seven".