747871 has 2 divisors, whose sum is σ = 747872. Its totient is φ = 747870.

The previous prime is 747869. The next prime is 747889. The reversal of 747871 is 178747.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 747871 - 2¹ = 747869 is a prime.

It is a super-2 number, since 2×747871² = 1118622065282, which contains 22 as substring.

Together with 747869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (747811) 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, 373935 + 373936.

It is an arithmetic number, because the mean of its divisors is an integer number (373936).

2⁷⁴⁷⁸⁷¹ is an apocalyptic number.

747871 is a deficient number, since it is larger than the sum of its proper divisors (1).

747871 is an equidigital number, since it uses as much as digits as its factorization.

747871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10976, while the sum is 34.

The square root of 747871 is about 864.7953515139. The cubic root of 747871 is about 90.7699781721.

The spelling of 747871 in words is "seven hundred forty-seven thousand, eight hundred seventy-one".