6666387792 has 40 divisors (see below), whose sum is σ = 17248199616. Its totient is φ = 2218684416.

The previous prime is 6666387787. The next prime is 6666387799. The reversal of 6666387792 is 2977836666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666387799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76273 + ... + 138384.

Almost surely, 2^6666387792 is an apocalyptic number.

It is an amenable number.

6666387792 is an abundant number, since it is smaller than the sum of its proper divisors (10581811824).

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

6666387792 is a wasteful number, since it uses less digits than its factorization.

6666387792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215315 (or 215309 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 60.

The square root of 6666387792 is about 81647.9503233241. The cubic root of 6666387792 is about 1882.0458142852.

The spelling of 6666387792 in words is "six billion, six hundred sixty-six million, three hundred eighty-seven thousand, seven hundred ninety-two".