6471247 has 4 divisors (see below), whose sum is σ = 6593400. Its totient is φ = 6349096.

The previous prime is 6471239. The next prime is 6471251. The reversal of 6471247 is 7421746.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7421746 = 2 ⋅3710873.

It is a cyclic number.

It is not a de Polignac number, because 6471247 - 2³ = 6471239 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam 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 (6471277) 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, 60997 + ... + 61102.

It is an arithmetic number, because the mean of its divisors is an integer number (1648350).

Almost surely, 2^6471247 is an apocalyptic number.

6471247 is a deficient number, since it is larger than the sum of its proper divisors (122153).

6471247 is a wasteful number, since it uses less digits than its factorization.

6471247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122152.

The product of its digits is 9408, while the sum is 31.

The square root of 6471247 is about 2543.8645797290. The cubic root of 6471247 is about 186.3499693040.

The spelling of 6471247 in words is "six million, four hundred seventy-one thousand, two hundred forty-seven".