6664245533 has 4 divisors (see below), whose sum is σ = 7270086048. Its totient is φ = 6058405020.

The previous prime is 6664245521. The next prime is 6664245569. The reversal of 6664245533 is 3355424666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6664245533 - 2¹⁶ = 6664179997 is a prime.

It is a super-2 number, since 2×6664245533² = 88824337048220908178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664241533) 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, 302920241 + ... + 302920262.

It is an arithmetic number, because the mean of its divisors is an integer number (1817521512).

Almost surely, 2^6664245533 is an apocalyptic number.

It is an amenable number.

6664245533 is a deficient number, since it is larger than the sum of its proper divisors (605840515).

6664245533 is a wasteful number, since it uses less digits than its factorization.

6664245533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605840514.

The product of its digits is 1555200, while the sum is 44.

The square root of 6664245533 is about 81634.8303912001. The cubic root of 6664245533 is about 1881.8441927741.

The spelling of 6664245533 in words is "six billion, six hundred sixty-four million, two hundred forty-five thousand, five hundred thirty-three".