6231609 has 6 divisors (see below), whose sum is σ = 9001226. Its totient is φ = 4154400.

The previous prime is 6231587. The next prime is 6231613. The reversal of 6231609 is 9061326.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5546025 + 685584 = 2355^2 + 828^2 .

It is not a de Polignac number, because 6231609 - 2⁷ = 6231481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6231629) 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, 346192 + ... + 346209.

Almost surely, 2^6231609 is an apocalyptic number.

It is an amenable number.

6231609 is a deficient number, since it is larger than the sum of its proper divisors (2769617).

6231609 is a wasteful number, since it uses less digits than its factorization.

6231609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692407 (or 692404 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 6231609 is about 2496.3190901806. The cubic root of 6231609 is about 184.0207226976.

The spelling of 6231609 in words is "six million, two hundred thirty-one thousand, six hundred nine".