6291971 has 4 divisors (see below), whose sum is σ = 7190832. Its totient is φ = 5393112.

The previous prime is 6291959. The next prime is 6291973. The reversal of 6291971 is 1791926.

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

It is a cyclic number.

It is not a de Polignac number, because 6291971 - 2¹⁴ = 6275587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6291973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449420 + ... + 449433.

It is an arithmetic number, because the mean of its divisors is an integer number (1797708).

Almost surely, 2^6291971 is an apocalyptic number.

6291971 is a deficient number, since it is larger than the sum of its proper divisors (898861).

6291971 is an equidigital number, since it uses as much as digits as its factorization.

6291971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898860.

The product of its digits is 6804, while the sum is 35.

The square root of 6291971 is about 2508.3801546018. The cubic root of 6291971 is about 184.6129820156.

The spelling of 6291971 in words is "six million, two hundred ninety-one thousand, nine hundred seventy-one".