6657491794 has 8 divisors (see below), whose sum is σ = 9989376768. Its totient is φ = 3327699540.

The previous prime is 6657491779. The next prime is 6657491803. The reversal of 6657491794 is 4971947566.

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

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, 515202 + ... + 527965.

It is an arithmetic number, because the mean of its divisors is an integer number (1248672096).

Almost surely, 2^6657491794 is an apocalyptic number.

6657491794 is a deficient number, since it is larger than the sum of its proper divisors (3331884974).

6657491794 is a wasteful number, since it uses less digits than its factorization.

6657491794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046360.

The product of its digits is 11430720, while the sum is 58.

The square root of 6657491794 is about 81593.4543575647. The cubic root of 6657491794 is about 1881.2082728110.

The spelling of 6657491794 in words is "six billion, six hundred fifty-seven million, four hundred ninety-one thousand, seven hundred ninety-four".