6231645 has 48 divisors (see below), whose sum is σ = 12559872. Its totient is φ = 2799360.

The previous prime is 6231637. The next prime is 6231647. The reversal of 6231645 is 5461326.

6231645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6231645 - 2³ = 6231637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6231647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22860 + ... + 23130.

It is an arithmetic number, because the mean of its divisors is an integer number (261664).

Almost surely, 2^6231645 is an apocalyptic number.

It is an amenable number.

6231645 is an abundant number, since it is smaller than the sum of its proper divisors (6328227).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6231645 is a wasteful number, since it uses less digits than its factorization.

6231645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 359 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 6231645 is about 2496.3263007868. The cubic root of 6231645 is about 184.0210770594.

The spelling of 6231645 in words is "six million, two hundred thirty-one thousand, six hundred forty-five".