6523623 has 6 divisors (see below), whose sum is σ = 9423024. Its totient is φ = 4349076.

The previous prime is 6523619. The next prime is 6523661. The reversal of 6523623 is 3263256.

6523623 is a `hidden beast` number, since 652 + 3 + 6 + 2 + 3 = 666.

It is not a de Polignac number, because 6523623 - 2² = 6523619 is a prime.

It is a super-2 number, since 2×6523623² = 85115314092258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6⁴ + 5⁴ + 2² + 3¹⁰ + 6⁸ + 2⁶ + 3¹⁴ .

6523623 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6523613) 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 5 ways as a sum of consecutive naturals, for example, 362415 + ... + 362432.

It is an arithmetic number, because the mean of its divisors is an integer number (1570504).

Almost surely, 2^6523623 is an apocalyptic number.

6523623 is a deficient number, since it is larger than the sum of its proper divisors (2899401).

6523623 is a wasteful number, since it uses less digits than its factorization.

6523623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724853 (or 724850 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 6523623 is about 2554.1384065865. The cubic root of 6523623 is about 186.8513694053.

Adding to 6523623 its reverse (3263256), we get a palindrome (9786879).

The spelling of 6523623 in words is "six million, five hundred twenty-three thousand, six hundred twenty-three".