6467971 has 2 divisors, whose sum is σ = 6467972. Its totient is φ = 6467970.

The previous prime is 6467969. The next prime is 6467977. The reversal of 6467971 is 1797646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6467971 - 2¹ = 6467969 is a prime.

Together with 6467969, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (6467977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3233985 + 3233986.

It is an arithmetic number, because the mean of its divisors is an integer number (3233986).

Almost surely, 2^6467971 is an apocalyptic number.

6467971 is a deficient number, since it is larger than the sum of its proper divisors (1).

6467971 is an equidigital number, since it uses as much as digits as its factorization.

6467971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 6467971 is about 2543.2205960160. The cubic root of 6467971 is about 186.3185180992.

The spelling of 6467971 in words is "six million, four hundred sixty-seven thousand, nine hundred seventy-one".