6408887 has 4 divisors (see below), whose sum is σ = 6475056. Its totient is φ = 6342720.

The previous prime is 6408877. The next prime is 6408901. The reversal of 6408887 is 7888046.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6408887 - 2⁶ = 6408823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6408877) 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 3 ways as a sum of consecutive naturals, for example, 32939 + ... + 33132.

It is an arithmetic number, because the mean of its divisors is an integer number (1618764).

Almost surely, 2^6408887 is an apocalyptic number.

6408887 is a deficient number, since it is larger than the sum of its proper divisors (66169).

6408887 is an equidigital number, since it uses as much as digits as its factorization.

6408887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66168.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 6408887 is about 2531.5779664075. The cubic root of 6408887 is about 185.7494506812.

The spelling of 6408887 in words is "six million, four hundred eight thousand, eight hundred eighty-seven".