6409653 has 16 divisors (see below), whose sum is σ = 9042432. Its totient is φ = 4034400.

The previous prime is 6409651. The next prime is 6409673. The reversal of 6409653 is 3569046.

It is a happy number.

It is not a de Polignac number, because 6409653 - 2¹ = 6409651 is a prime.

It is a d-powerful number, because it can be written as 6 + 4¹⁰ + 0 + 9⁶ + 6⁶ + 5 + 3¹⁴ .

6409653 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6409651) 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 15 ways as a sum of consecutive naturals, for example, 156313 + ... + 156353.

It is an arithmetic number, because the mean of its divisors is an integer number (565152).

Almost surely, 2^6409653 is an apocalyptic number.

It is an amenable number.

6409653 is a deficient number, since it is larger than the sum of its proper divisors (2632779).

6409653 is an frugal number, since it uses more digits than its factorization.

6409653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 6409653 is about 2531.7292509271. The cubic root of 6409653 is about 185.7568507394.

The spelling of 6409653 in words is "six million, four hundred nine thousand, six hundred fifty-three".