6687754538 has 16 divisors (see below), whose sum is σ = 10114554240. Its totient is φ = 3316287936.

The previous prime is 6687754537. The next prime is 6687754571. The reversal of 6687754538 is 8354577866.

It is not an unprimeable number, because it can be changed into a prime (6687754537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259295 + ... + 283917.

It is an arithmetic number, because the mean of its divisors is an integer number (632159640).

Almost surely, 2^6687754538 is an apocalyptic number.

6687754538 is a deficient number, since it is larger than the sum of its proper divisors (3426799702).

6687754538 is a wasteful number, since it uses less digits than its factorization.

6687754538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25741.

The product of its digits is 33868800, while the sum is 59.

The square root of 6687754538 is about 81778.6924449150. The cubic root of 6687754538 is about 1884.0544137153.

The spelling of 6687754538 in words is "six billion, six hundred eighty-seven million, seven hundred fifty-four thousand, five hundred thirty-eight".