6368409 has 16 divisors (see below), whose sum is σ = 9504000. Its totient is φ = 4214448.

The previous prime is 6368393. The next prime is 6368413. The reversal of 6368409 is 9048636.

It is not a de Polignac number, because 6368409 - 2⁴ = 6368393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6368449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3232 + ... + 4814.

It is an arithmetic number, because the mean of its divisors is an integer number (594000).

Almost surely, 2^6368409 is an apocalyptic number.

It is an amenable number.

6368409 is a deficient number, since it is larger than the sum of its proper divisors (3135591).

6368409 is a wasteful number, since it uses less digits than its factorization.

6368409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741 (or 1735 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 6368409 is about 2523.5706845658. The cubic root of 6368409 is about 185.3575650936.

It can be divided in two parts, 636 and 8409, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 6368409 in words is "six million, three hundred sixty-eight thousand, four hundred nine".