6409975 has 36 divisors (see below), whose sum is σ = 9466408. Its totient is φ = 4276800.

The previous prime is 6409943. The next prime is 6410009. The reversal of 6409975 is 5799046.

It is not a de Polignac number, because 6409975 - 2⁵ = 6409943 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 39244 + ... + 39406.

Almost surely, 2^6409975 is an apocalyptic number.

6409975 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6409975 is a deficient number, since it is larger than the sum of its proper divisors (3056433).

6409975 is a wasteful number, since it uses less digits than its factorization.

6409975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 6409975 is about 2531.7928430265. The cubic root of 6409975 is about 185.7599612929.

The spelling of 6409975 in words is "six million, four hundred nine thousand, nine hundred seventy-five".