6656747442 has 8 divisors (see below), whose sum is σ = 13313494896. Its totient is φ = 2218915812.

The previous prime is 6656747431. The next prime is 6656747473. The reversal of 6656747442 is 2447476566.

It is a sphenic number, since it is the product of 3 distinct primes.

6656747442 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554728948 + ... + 554728959.

It is an arithmetic number, because the mean of its divisors is an integer number (1664186862).

Almost surely, 2^6656747442 is an apocalyptic number.

6656747442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6656747442 is a wasteful number, since it uses less digits than its factorization.

6656747442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109457912.

The product of its digits is 6773760, while the sum is 51.

The square root of 6656747442 is about 81588.8928837743. The cubic root of 6656747442 is about 1881.1381596525.

The spelling of 6656747442 in words is "six billion, six hundred fifty-six million, seven hundred forty-seven thousand, four hundred forty-two".