6665749983 has 16 divisors (see below), whose sum is σ = 10193740800. Its totient is φ = 4300483320.

The previous prime is 6665749927. The next prime is 6665750017. The reversal of 6665749983 is 3899475666.

It is not a de Polignac number, because 6665749983 - 2⁶ = 6665749919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6665749983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665749483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3981093 + ... + 3982766.

It is an arithmetic number, because the mean of its divisors is an integer number (637108800).

Almost surely, 2^6665749983 is an apocalyptic number.

6665749983 is a deficient number, since it is larger than the sum of its proper divisors (3527990817).

6665749983 is a wasteful number, since it uses less digits than its factorization.

6665749983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7963899 (or 7963893 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 63.

The square root of 6665749983 is about 81644.0443816939. The cubic root of 6665749983 is about 1881.9857905722.

The spelling of 6665749983 in words is "six billion, six hundred sixty-five million, seven hundred forty-nine thousand, nine hundred eighty-three".