6686755442 has 8 divisors (see below), whose sum is σ = 10200135600. Its totient is φ = 3286710244.

The previous prime is 6686755433. The next prime is 6686755447. The reversal of 6686755442 is 2445576866.

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

It is a super-2 number, since 2×6686755442² = 89425396682233230728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6686755447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28333592 + ... + 28333827.

It is an arithmetic number, because the mean of its divisors is an integer number (1275016950).

Almost surely, 2^6686755442 is an apocalyptic number.

6686755442 is a deficient number, since it is larger than the sum of its proper divisors (3513380158).

6686755442 is a wasteful number, since it uses less digits than its factorization.

6686755442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56667480.

The product of its digits is 9676800, while the sum is 53.

The square root of 6686755442 is about 81772.5836818184. The cubic root of 6686755442 is about 1883.9605882536.

The spelling of 6686755442 in words is "six billion, six hundred eighty-six million, seven hundred fifty-five thousand, four hundred forty-two".