6491247 has 8 divisors (see below), whose sum is σ = 9891456. Its totient is φ = 3709272.

The previous prime is 6491231. The next prime is 6491257. The reversal of 6491247 is 7421946.

It is a happy number.

6491247 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6491247 - 2⁴ = 6491231 is a prime.

6491247 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154533 + ... + 154574.

It is an arithmetic number, because the mean of its divisors is an integer number (1236432).

Almost surely, 2^6491247 is an apocalyptic number.

6491247 is a deficient number, since it is larger than the sum of its proper divisors (3400209).

6491247 is a wasteful number, since it uses less digits than its factorization.

6491247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309117.

The product of its digits is 12096, while the sum is 33.

The square root of 6491247 is about 2547.7925739746. The cubic root of 6491247 is about 186.5417492612.

The spelling of 6491247 in words is "six million, four hundred ninety-one thousand, two hundred forty-seven".