6687513 has 24 divisors (see below), whose sum is σ = 11159616. Its totient is φ = 3780000.

The previous prime is 6687497. The next prime is 6687521. The reversal of 6687513 is 3157866.

6687513 is a `hidden beast` number, since 66 + 87 + 513 = 666.

6687513 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 6687513 - 2⁴ = 6687497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6687523) 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, 5838 + ... + 6888.

It is an arithmetic number, because the mean of its divisors is an integer number (464984).

Almost surely, 2^6687513 is an apocalyptic number.

6687513 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

6687513 is a deficient number, since it is larger than the sum of its proper divisors (4472103).

6687513 is a wasteful number, since it uses less digits than its factorization.

6687513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165 (or 1162 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 6687513 is about 2586.0226217108. The cubic root of 6687513 is about 188.4031731652.

The spelling of 6687513 in words is "six million, six hundred eighty-seven thousand, five hundred thirteen".