3663397 has 4 divisors (see below), whose sum is σ = 3676716. Its totient is φ = 3650080.

The previous prime is 3663383. The next prime is 3663419. The reversal of 3663397 is 7933663.

It is a Cunningham number, because it is equal to 1914²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7933663 = 2311 ⋅3433.

It can be written as a sum of positive squares in 2 ways, for example, as 2477476 + 1185921 = 1574^2 + 1089^2 .

It is a cyclic number.

It is not a de Polignac number, because 3663397 - 2¹⁵ = 3630629 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 (3663337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6238 + ... + 6799.

It is an arithmetic number, because the mean of its divisors is an integer number (919179).

Almost surely, 2^3663397 is an apocalyptic number.

It is an amenable number.

3663397 is a deficient number, since it is larger than the sum of its proper divisors (13319).

3663397 is a wasteful number, since it uses less digits than its factorization.

3663397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13318.

The product of its digits is 61236, while the sum is 37.

The square root of 3663397 is about 1914.0002612330. Note that the first 3 decimals coincide. The cubic root of 3663397 is about 154.1563179158.

The spelling of 3663397 in words is "three million, six hundred sixty-three thousand, three hundred ninety-seven".