6491071 has 4 divisors (see below), whose sum is σ = 6597544. Its totient is φ = 6384600.

The previous prime is 6491047. The next prime is 6491081. The reversal of 6491071 is 1701946.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1701946 = 2 ⋅850973.

It is a cyclic number.

It is not a de Polignac number, because 6491071 - 2⁵ = 6491039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491011) 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, 53145 + ... + 53266.

It is an arithmetic number, because the mean of its divisors is an integer number (1649386).

Almost surely, 2^6491071 is an apocalyptic number.

6491071 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

6491071 is a deficient number, since it is larger than the sum of its proper divisors (106473).

6491071 is a wasteful number, since it uses less digits than its factorization.

6491071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106472.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 6491071 is about 2547.7580340370. The cubic root of 6491071 is about 186.5400633168.

The spelling of 6491071 in words is "six million, four hundred ninety-one thousand, seventy-one".