6653231 has 4 divisors (see below), whose sum is σ = 7165032. Its totient is φ = 6141432.

The previous prime is 6653221. The next prime is 6653243. The reversal of 6653231 is 1323566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6653231 - 2¹⁰ = 6652207 is a prime.

It is a super-2 number, since 2×6653231² = 88530965478722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6653231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6653221) 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, 255881 + ... + 255906.

It is an arithmetic number, because the mean of its divisors is an integer number (1791258).

Almost surely, 2^6653231 is an apocalyptic number.

6653231 is a deficient number, since it is larger than the sum of its proper divisors (511801).

6653231 is a wasteful number, since it uses less digits than its factorization.

6653231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511800.

The product of its digits is 3240, while the sum is 26.

The square root of 6653231 is about 2579.3857795995. The cubic root of 6653231 is about 188.0806862804.

Adding to 6653231 its reverse (1323566), we get a palindrome (7976797).

The spelling of 6653231 in words is "six million, six hundred fifty-three thousand, two hundred thirty-one".