6403867 has 8 divisors (see below), whose sum is σ = 6913440. Its totient is φ = 5913600.

The previous prime is 6403853. The next prime is 6403877. The reversal of 6403867 is 7683046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6403867 - 2⁷ = 6403739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6403847) 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 7 ways as a sum of consecutive naturals, for example, 4134 + ... + 5467.

It is an arithmetic number, because the mean of its divisors is an integer number (864180).

Almost surely, 2^6403867 is an apocalyptic number.

6403867 is a deficient number, since it is larger than the sum of its proper divisors (509573).

6403867 is a wasteful number, since it uses less digits than its factorization.

6403867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9653.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 6403867 is about 2530.5862957030. The cubic root of 6403867 is about 185.7009396157.

The spelling of 6403867 in words is "six million, four hundred three thousand, eight hundred sixty-seven".