3663522197 has 4 divisors (see below), whose sum is σ = 3699794796. Its totient is φ = 3627249600.

The previous prime is 3663522193. The next prime is 3663522227. The reversal of 3663522197 is 7912253663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7912253663 = 2887 ⋅2740649.

It can be written as a sum of positive squares in 2 ways, for example, as 3239203396 + 424318801 = 56914^2 + 20599^2 .

It is a cyclic number.

It is not a de Polignac number, because 3663522197 - 2² = 3663522193 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 (3663522193) 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, 18136148 + ... + 18136349.

It is an arithmetic number, because the mean of its divisors is an integer number (924948699).

Almost surely, 2^3663522197 is an apocalyptic number.

It is an amenable number.

3663522197 is a deficient number, since it is larger than the sum of its proper divisors (36272599).

3663522197 is a wasteful number, since it uses less digits than its factorization.

3663522197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36272598.

The product of its digits is 408240, while the sum is 44.

The square root of 3663522197 is about 60527.0369091367. The cubic root of 3663522197 is about 1541.5807399894.

The spelling of 3663522197 in words is "three billion, six hundred sixty-three million, five hundred twenty-two thousand, one hundred ninety-seven".