6787471 has 4 divisors (see below), whose sum is σ = 7186752. Its totient is φ = 6388192.

The previous prime is 6787457. The next prime is 6787489. The reversal of 6787471 is 1747876.

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

It is not a de Polignac number, because 6787471 - 2⁵ = 6787439 is a prime.

It is a super-3 number, since 3×6787471³ (a number of 21 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6787441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199615 + ... + 199648.

It is an arithmetic number, because the mean of its divisors is an integer number (1796688).

Almost surely, 2^6787471 is an apocalyptic number.

6787471 is a deficient number, since it is larger than the sum of its proper divisors (399281).

6787471 is a wasteful number, since it uses less digits than its factorization.

6787471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399280.

The product of its digits is 65856, while the sum is 40.

The square root of 6787471 is about 2605.2775284027. The cubic root of 6787471 is about 189.3372197868.

The spelling of 6787471 in words is "six million, seven hundred eighty-seven thousand, four hundred seventy-one".