6400267 has 4 divisors (see below), whose sum is σ = 6449256. Its totient is φ = 6351280.

The previous prime is 6400259. The next prime is 6400349. The reversal of 6400267 is 7620046.

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 6400267 - 2³ = 6400259 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 (6400367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24298 + ... + 24559.

It is an arithmetic number, because the mean of its divisors is an integer number (1612314).

Almost surely, 2^6400267 is an apocalyptic number.

6400267 is a deficient number, since it is larger than the sum of its proper divisors (48989).

6400267 is a wasteful number, since it uses less digits than its factorization.

6400267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48988.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 6400267 is about 2529.8748980928. The cubic root of 6400267 is about 185.6661351924. Note that the first 3 decimals are identical.

The spelling of 6400267 in words is "six million, four hundred thousand, two hundred sixty-seven".