3218623 has 8 divisors (see below), whose sum is σ = 3412080. Its totient is φ = 3030720.

The previous prime is 3218609. The next prime is 3218629. The reversal of 3218623 is 3268123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-3218623 is a prime.

It is a super-2 number, since 2×3218623² = 20719068032258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3218629) 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 7 ways as a sum of consecutive naturals, for example, 165 + ... + 2542.

It is an arithmetic number, because the mean of its divisors is an integer number (426510).

Almost surely, 2^3218623 is an apocalyptic number.

3218623 is a deficient number, since it is larger than the sum of its proper divisors (193457).

3218623 is a wasteful number, since it uses less digits than its factorization.

3218623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777.

The product of its digits is 1728, while the sum is 25.

The square root of 3218623 is about 1794.0521174147. The cubic root of 3218623 is about 147.6465726765.

The spelling of 3218623 in words is "three million, two hundred eighteen thousand, six hundred twenty-three".