4231645 has 16 divisors (see below), whose sum is σ = 5660928. Its totient is φ = 3010240.

The previous prime is 4231637. The next prime is 4231663. The reversal of 4231645 is 5461324.

It is not a de Polignac number, because 4231645 - 2³ = 4231637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1767 + ... + 3403.

It is an arithmetic number, because the mean of its divisors is an integer number (353808).

Almost surely, 2^4231645 is an apocalyptic number.

It is an amenable number.

4231645 is a deficient number, since it is larger than the sum of its proper divisors (1429283).

4231645 is a wasteful number, since it uses less digits than its factorization.

4231645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700.

The product of its digits is 2880, while the sum is 25.

The square root of 4231645 is about 2057.0962544324. The cubic root of 4231645 is about 161.7470650282.

Adding to 4231645 its reverse (5461324), we get a palindrome (9692969).

The spelling of 4231645 in words is "four million, two hundred thirty-one thousand, six hundred forty-five".