6663196642 has 8 divisors (see below), whose sum is σ = 10107096300. Its totient is φ = 3294164544.

The previous prime is 6663196457. The next prime is 6663196667. The reversal of 6663196642 is 2466913666.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6475259961 + 187936681 = 80469^2 + 13709^2 .

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, 18716667 + ... + 18717022.

Almost surely, 2^6663196642 is an apocalyptic number.

6663196642 is a deficient number, since it is larger than the sum of its proper divisors (3443899658).

6663196642 is a wasteful number, since it uses less digits than its factorization.

6663196642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37433780.

The product of its digits is 1679616, while the sum is 49.

The square root of 6663196642 is about 81628.4058523747. The cubic root of 6663196642 is about 1881.7454592670.

The spelling of 6663196642 in words is "six billion, six hundred sixty-three million, one hundred ninety-six thousand, six hundred forty-two".