6497571 has 4 divisors (see below), whose sum is σ = 8663432. Its totient is φ = 4331712.

The previous prime is 6497539. The next prime is 6497581. The reversal of 6497571 is 1757946.

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

It is not a de Polignac number, because 6497571 - 2⁵ = 6497539 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6497581) 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, 1082926 + ... + 1082931.

It is an arithmetic number, because the mean of its divisors is an integer number (2165858).

Almost surely, 2^6497571 is an apocalyptic number.

6497571 is a deficient number, since it is larger than the sum of its proper divisors (2165861).

6497571 is a wasteful number, since it uses less digits than its factorization.

6497571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165860.

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

The square root of 6497571 is about 2549.0333461922. The cubic root of 6497571 is about 186.6023080994.

The spelling of 6497571 in words is "six million, four hundred ninety-seven thousand, five hundred seventy-one".