6665744783 has 4 divisors (see below), whose sum is σ = 6681578328. Its totient is φ = 6649911240.

The previous prime is 6665744753. The next prime is 6665744797. The reversal of 6665744783 is 3874475666.

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

It is a cyclic number.

It is not a de Polignac number, because 6665744783 - 2¹⁰ = 6665743759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665744753) 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, 7916141 + ... + 7916982.

It is an arithmetic number, because the mean of its divisors is an integer number (1670394582).

Almost surely, 2^6665744783 is an apocalyptic number.

6665744783 is a deficient number, since it is larger than the sum of its proper divisors (15833545).

6665744783 is a wasteful number, since it uses less digits than its factorization.

6665744783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15833544.

The product of its digits is 20321280, while the sum is 56.

The square root of 6665744783 is about 81644.0125361315. The cubic root of 6665744783 is about 1881.9853011885.

The spelling of 6665744783 in words is "six billion, six hundred sixty-five million, seven hundred forty-four thousand, seven hundred eighty-three".