6457971 has 8 divisors (see below), whose sum is σ = 9273040. Its totient is φ = 3974112.

The previous prime is 6457949. The next prime is 6457987. The reversal of 6457971 is 1797546.

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

It is not a de Polignac number, because 6457971 - 2⁵ = 6457939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 165589 = 6457971 / (6 + 4 + 5 + 7 + 9 + 7 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6457921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82756 + ... + 82833.

It is an arithmetic number, because the mean of its divisors is an integer number (1159130).

Almost surely, 2^6457971 is an apocalyptic number.

6457971 is a deficient number, since it is larger than the sum of its proper divisors (2815069).

6457971 is a wasteful number, since it uses less digits than its factorization.

6457971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165605.

The product of its digits is 52920, while the sum is 39.

The square root of 6457971 is about 2541.2538243946. The cubic root of 6457971 is about 186.2224474655. Note that the first 3 decimals are identical.

The spelling of 6457971 in words is "six million, four hundred fifty-seven thousand, nine hundred seventy-one".