6400306 has 8 divisors (see below), whose sum is σ = 10473264. Its totient is φ = 2909220.

The previous prime is 6400259. The next prime is 6400349. The reversal of 6400306 is 6030046.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145440 + ... + 145483.

It is an arithmetic number, because the mean of its divisors is an integer number (1309158).

Almost surely, 2^6400306 is an apocalyptic number.

6400306 is a deficient number, since it is larger than the sum of its proper divisors (4072958).

6400306 is a wasteful number, since it uses less digits than its factorization.

6400306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290936.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 6400306 is about 2529.8826059721. The cubic root of 6400306 is about 185.6665123102. Note that the first 3 decimals are identical.

The spelling of 6400306 in words is "six million, four hundred thousand, three hundred six".