6664433 has 4 divisors (see below), whose sum is σ = 6773748. Its totient is φ = 6555120.

The previous prime is 6664429. The next prime is 6664447. The reversal of 6664433 is 3344666.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1151329 + 5513104 = 1073^2 + 2348^2 .

It is a cyclic number.

It is not a de Polignac number, because 6664433 - 2² = 6664429 is a prime.

It is a super-2 number, since 2×6664433² = 88829334422978, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6664433.

It is not an unprimeable number, because it can be changed into a prime (6664453) 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, 54566 + ... + 54687.

It is an arithmetic number, because the mean of its divisors is an integer number (1693437).

Almost surely, 2^6664433 is an apocalyptic number.

It is an amenable number.

6664433 is a deficient number, since it is larger than the sum of its proper divisors (109315).

6664433 is a wasteful number, since it uses less digits than its factorization.

6664433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109314.

The product of its digits is 31104, while the sum is 32.

The square root of 6664433 is about 2581.5563135442. The cubic root of 6664433 is about 188.1861838201.

The spelling of 6664433 in words is "six million, six hundred sixty-four thousand, four hundred thirty-three".