6408387 has 12 divisors (see below), whose sum is σ = 9294480. Its totient is φ = 4254768.

The previous prime is 6408359. The next prime is 6408407. The reversal of 6408387 is 7838046.

6408387 is a `hidden beast` number, since 640 + 8 + 3 + 8 + 7 = 666.

6408387 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 6408387 - 2⁶ = 6408323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6408487) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1098 + ... + 3744.

It is an arithmetic number, because the mean of its divisors is an integer number (774540).

Almost surely, 2^6408387 is an apocalyptic number.

6408387 is a deficient number, since it is larger than the sum of its proper divisors (2886093).

6408387 is a wasteful number, since it uses less digits than its factorization.

6408387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922 (or 2919 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 6408387 is about 2531.4792118443. The cubic root of 6408387 is about 185.7446200379.

The spelling of 6408387 in words is "six million, four hundred eight thousand, three hundred eighty-seven".