6738684687 has 24 divisors (see below), whose sum is σ = 11126329344. Its totient is φ = 3849932304.

The previous prime is 6738684649. The next prime is 6738684697. The reversal of 6738684687 is 7864868376.

6738684687 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6738684687 - 2¹⁵ = 6738651919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6738684697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 638818 + ... + 649280.

It is an arithmetic number, because the mean of its divisors is an integer number (463597056).

Almost surely, 2^6738684687 is an apocalyptic number.

6738684687 is a deficient number, since it is larger than the sum of its proper divisors (4387644657).

6738684687 is a wasteful number, since it uses less digits than its factorization.

6738684687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20699 (or 20696 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 63.

The square root of 6738684687 is about 82089.4919401990. The cubic root of 6738684687 is about 1888.8249544966.

The spelling of 6738684687 in words is "six billion, seven hundred thirty-eight million, six hundred eighty-four thousand, six hundred eighty-seven".