871477 has 2 divisors, whose sum is σ = 871478. Its totient is φ = 871476.

The previous prime is 871463. The next prime is 871513. The reversal of 871477 is 774178.

871477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 649636 + 221841 = 806^2 + 471^2 .

It is a cyclic number.

It is not a de Polignac number, because 871477 - 2⁷ = 871349 is a prime.

It is an Ulam number.

It is equal to p₆₉₁₉₉ and since 871477 and 69199 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 13 and base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (871177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435738 + 435739.

It is an arithmetic number, because the mean of its divisors is an integer number (435739).

2⁸⁷¹⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

871477 is a deficient number, since it is larger than the sum of its proper divisors (1).

871477 is an equidigital number, since it uses as much as digits as its factorization.

871477 is an evil number, because the sum of its binary digits is even.

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

The square root of 871477 is about 933.5293246599. The cubic root of 871477 is about 95.5180196802.

The spelling of 871477 in words is "eight hundred seventy-one thousand, four hundred seventy-seven".