6487147 has 4 divisors (see below), whose sum is σ = 6609600. Its totient is φ = 6364696.

The previous prime is 6487123. The next prime is 6487157. The reversal of 6487147 is 7417846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7417846 = 2 ⋅3708923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6487147 is a prime.

It is a Duffinian number.

6487147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6487157) 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, 61147 + ... + 61252.

It is an arithmetic number, because the mean of its divisors is an integer number (1652400).

Almost surely, 2^6487147 is an apocalyptic number.

6487147 is a deficient number, since it is larger than the sum of its proper divisors (122453).

6487147 is a wasteful number, since it uses less digits than its factorization.

6487147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122452.

The product of its digits is 37632, while the sum is 37.

The square root of 6487147 is about 2546.9878287891. The cubic root of 6487147 is about 186.5024665032.

The spelling of 6487147 in words is "six million, four hundred eighty-seven thousand, one hundred forty-seven".