6684536990 has 16 divisors (see below), whose sum is σ = 12033461952. Its totient is φ = 2673526944.

The previous prime is 6684536987. The next prime is 6684537001. The reversal of 6684536990 is 996354866.

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 7 ways as a sum of consecutive naturals, for example, 79067 + ... + 140073.

It is an arithmetic number, because the mean of its divisors is an integer number (752091372).

Almost surely, 2^6684536990 is an apocalyptic number.

6684536990 is a deficient number, since it is larger than the sum of its proper divisors (5348924962).

6684536990 is a wasteful number, since it uses less digits than its factorization.

6684536990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71971.

The product of its (nonzero) digits is 8398080, while the sum is 56.

The square root of 6684536990 is about 81759.0177900885. The cubic root of 6684536990 is about 1883.7522192141.

The spelling of 6684536990 in words is "six billion, six hundred eighty-four million, five hundred thirty-six thousand, nine hundred ninety".