7901671 has 2 divisors, whose sum is σ = 7901672. Its totient is φ = 7901670.

The previous prime is 7901669. The next prime is 7901713. The reversal of 7901671 is 1761097.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7901671 - 2¹ = 7901669 is a prime.

Together with 7901669, it forms a pair of twin primes.

7901671 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7901071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3950835 + 3950836.

It is an arithmetic number, because the mean of its divisors is an integer number (3950836).

Almost surely, 2^7901671 is an apocalyptic number.

7901671 is a deficient number, since it is larger than the sum of its proper divisors (1).

7901671 is an equidigital number, since it uses as much as digits as its factorization.

7901671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 31.

The square root of 7901671 is about 2810.9911063538. The cubic root of 7901671 is about 199.1772114031.

The spelling of 7901671 in words is "seven million, nine hundred one thousand, six hundred seventy-one".