6664435 has 8 divisors (see below), whose sum is σ = 8036496. Its totient is φ = 5305440.

The previous prime is 6664429. The next prime is 6664447. The reversal of 6664435 is 5344666.

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

It is a de Polignac number, because none of the positive numbers 2^k-6664435 is a prime.

It is a Duffinian number.

6664435 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6664435.

It is an unprimeable number.

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, 2104 + ... + 4213.

It is an arithmetic number, because the mean of its divisors is an integer number (1004562).

Almost surely, 2^6664435 is an apocalyptic number.

6664435 is a deficient number, since it is larger than the sum of its proper divisors (1372061).

6664435 is a wasteful number, since it uses less digits than its factorization.

6664435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6533.

The product of its digits is 51840, while the sum is 34.

The square root of 6664435 is about 2581.5567009074. The cubic root of 6664435 is about 188.1862026451.

The spelling of 6664435 in words is "six million, six hundred sixty-four thousand, four hundred thirty-five".