6606623 has 4 divisors (see below), whose sum is σ = 6954360. Its totient is φ = 6258888.

The previous prime is 6606581. The next prime is 6606629. The reversal of 6606623 is 3266066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3266066 = 2 ⋅1633033.

It is a cyclic number.

It is not a de Polignac number, because 6606623 - 2¹⁴ = 6590239 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 (6606629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173840 + ... + 173877.

It is an arithmetic number, because the mean of its divisors is an integer number (1738590).

Almost surely, 2^6606623 is an apocalyptic number.

6606623 is a deficient number, since it is larger than the sum of its proper divisors (347737).

6606623 is a wasteful number, since it uses less digits than its factorization.

6606623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347736.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 6606623 is about 2570.3351921491. The cubic root of 6606623 is about 187.6404683694.

The spelling of 6606623 in words is "six million, six hundred six thousand, six hundred twenty-three".