3318639 has 4 divisors (see below), whose sum is σ = 4424856. Its totient is φ = 2212424.

The previous prime is 3318631. The next prime is 3318671. The reversal of 3318639 is 9368133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9368133 = 3 ⋅3122711.

It is a cyclic number.

It is not a de Polignac number, because 3318639 - 2³ = 3318631 is a prime.

It is a super-2 number, since 2×3318639² = 22026729624642, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3318631) 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, 553104 + ... + 553109.

It is an arithmetic number, because the mean of its divisors is an integer number (1106214).

Almost surely, 2^3318639 is an apocalyptic number.

3318639 is a deficient number, since it is larger than the sum of its proper divisors (1106217).

3318639 is a wasteful number, since it uses less digits than its factorization.

3318639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106216.

The product of its digits is 11664, while the sum is 33.

The square root of 3318639 is about 1821.7132046511. The cubic root of 3318639 is about 149.1603306957.

The spelling of 3318639 in words is "three million, three hundred eighteen thousand, six hundred thirty-nine".