6687530247 has 4 divisors (see below), whose sum is σ = 8916707000. Its totient is φ = 4458353496.

The previous prime is 6687530233. The next prime is 6687530251. The reversal of 6687530247 is 7420357866.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6687530247 - 2⁸ = 6687529991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6687530196 and 6687530205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6687530207) 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, 1114588372 + ... + 1114588377.

It is an arithmetic number, because the mean of its divisors is an integer number (2229176750).

Almost surely, 2^6687530247 is an apocalyptic number.

6687530247 is a deficient number, since it is larger than the sum of its proper divisors (2229176753).

6687530247 is a wasteful number, since it uses less digits than its factorization.

6687530247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229176752.

The product of its (nonzero) digits is 1693440, while the sum is 48.

The square root of 6687530247 is about 81777.3211043257. The cubic root of 6687530247 is about 1884.0333512810.

The spelling of 6687530247 in words is "six billion, six hundred eighty-seven million, five hundred thirty thousand, two hundred forty-seven".