6683639742 has 48 divisors (see below), whose sum is σ = 16098246528. Its totient is φ = 1990163520.

The previous prime is 6683639737. The next prime is 6683639771. The reversal of 6683639742 is 2479363866.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 453433 + ... + 467940.

It is an arithmetic number, because the mean of its divisors is an integer number (335380136).

Almost surely, 2^6683639742 is an apocalyptic number.

6683639742 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

6683639742 is an abundant number, since it is smaller than the sum of its proper divisors (9414606786).

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

6683639742 is a wasteful number, since it uses less digits than its factorization.

6683639742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921425 (or 921422 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The square root of 6683639742 is about 81753.5304558769. The cubic root of 6683639742 is about 1883.6679317238.

The spelling of 6683639742 in words is "six billion, six hundred eighty-three million, six hundred thirty-nine thousand, seven hundred forty-two".