6660747444 has 48 divisors (see below), whose sum is σ = 16747049088. Its totient is φ = 2048262528.

The previous prime is 6660747413. The next prime is 6660747449. The reversal of 6660747444 is 4447470666.

It is a junction number, because it is equal to n+sod(n) for n = 6660747393 and 6660747402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660747449) 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, 276574 + ... + 299690.

It is an arithmetic number, because the mean of its divisors is an integer number (348896856).

Almost surely, 2^6660747444 is an apocalyptic number.

It is an amenable number.

6660747444 is an abundant number, since it is smaller than the sum of its proper divisors (10086301644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6660747444 is a wasteful number, since it uses less digits than its factorization.

6660747444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24984 (or 24982 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 48.

The square root of 6660747444 is about 81613.4023552505. The cubic root of 6660747444 is about 1881.5148726451.

The spelling of 6660747444 in words is "six billion, six hundred sixty million, seven hundred forty-seven thousand, four hundred forty-four".