6399145 has 8 divisors (see below), whose sum is σ = 7693056. Its totient is φ = 5109936.

The previous prime is 6399139. The next prime is 6399161. The reversal of 6399145 is 5419936.

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 6399145 - 2³ = 6399137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3574 + ... + 5056.

It is an arithmetic number, because the mean of its divisors is an integer number (961632).

Almost surely, 2^6399145 is an apocalyptic number.

It is an amenable number.

6399145 is a deficient number, since it is larger than the sum of its proper divisors (1293911).

6399145 is a wasteful number, since it uses less digits than its factorization.

6399145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351.

The product of its digits is 29160, while the sum is 37.

The square root of 6399145 is about 2529.6531382781. The cubic root of 6399145 is about 185.6552851462.

The spelling of 6399145 in words is "six million, three hundred ninety-nine thousand, one hundred forty-five".