6623775 has 30 divisors (see below), whose sum is σ = 12273272. Its totient is φ = 3531600.

The previous prime is 6623759. The next prime is 6623789. The reversal of 6623775 is 5773266.

It is a happy number.

It is not a de Polignac number, because 6623775 - 2⁴ = 6623759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 390 + ... + 3660.

Almost surely, 2^6623775 is an apocalyptic number.

6623775 is a deficient number, since it is larger than the sum of its proper divisors (5649497).

6623775 is a wasteful number, since it uses less digits than its factorization.

6623775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293 (or 3279 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 6623775 is about 2573.6695592092. The cubic root of 6623775 is about 187.8027110225.

The spelling of 6623775 in words is "six million, six hundred twenty-three thousand, seven hundred seventy-five".