3581366 has 4 divisors (see below), whose sum is σ = 5372052. Its totient is φ = 1790682.

The previous prime is 3581363. The next prime is 3581377. The reversal of 3581366 is 6631853.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6631853 = 17 ⋅390109.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3581363) 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 as a sum of consecutive naturals, namely, 895340 + ... + 895343.

It is an arithmetic number, because the mean of its divisors is an integer number (1343013).

Almost surely, 2^3581366 is an apocalyptic number.

3581366 is a deficient number, since it is larger than the sum of its proper divisors (1790686).

3581366 is a wasteful number, since it uses less digits than its factorization.

3581366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790685.

The product of its digits is 12960, while the sum is 32.

The square root of 3581366 is about 1892.4497351317. The cubic root of 3581366 is about 152.9969953986.

The spelling of 3581366 in words is "three million, five hundred eighty-one thousand, three hundred sixty-six".