871378693 has 2 divisors, whose sum is σ = 871378694. Its totient is φ = 871378692.

The previous prime is 871378691. The next prime is 871378723. The reversal of 871378693 is 396873178.

It is a happy number.

871378693 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., 565583524 + 305795169 = 23782^2 + 17487^2 .

It is a cyclic number.

It is not a de Polignac number, because 871378693 - 2¹ = 871378691 is a prime.

It is a super-2 number, since 2×871378693² = 1518601653228776498, which contains 22 as substring.

Together with 871378691, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 871378693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (871378691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435689346 + 435689347.

It is an arithmetic number, because the mean of its divisors is an integer number (435689347).

Almost surely, 2^871378693 is an apocalyptic number.

It is an amenable number.

871378693 is a deficient number, since it is larger than the sum of its proper divisors (1).

871378693 is an equidigital number, since it uses as much as digits as its factorization.

871378693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 52.

The square root of 871378693 is about 29519.1241909376. The cubic root of 871378693 is about 955.1442790705.

The spelling of 871378693 in words is "eight hundred seventy-one million, three hundred seventy-eight thousand, six hundred ninety-three".