6664359 has 8 divisors (see below), whose sum is σ = 9569392. Its totient is φ = 4101120.

The previous prime is 6664351. The next prime is 6664381. The reversal of 6664359 is 9534666.

It is a happy number.

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

It is not a de Polignac number, because 6664359 - 2³ = 6664351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 170881 = 6664359 / (6 + 6 + 6 + 4 + 3 + 5 + 9).

It is a Duffinian number.

6664359 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85402 + ... + 85479.

It is an arithmetic number, because the mean of its divisors is an integer number (1196174).

Almost surely, 2^6664359 is an apocalyptic number.

6664359 is a deficient number, since it is larger than the sum of its proper divisors (2905033).

6664359 is a wasteful number, since it uses less digits than its factorization.

6664359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170897.

The product of its digits is 116640, while the sum is 39.

The square root of 6664359 is about 2581.5419810648. The cubic root of 6664359 is about 188.1854872953.

The spelling of 6664359 in words is "six million, six hundred sixty-four thousand, three hundred fifty-nine".