871069836 has 96 divisors (see below), whose sum is σ = 2569262080. Its totient is φ = 223513344.

The previous prime is 871069831. The next prime is 871069841. The reversal of 871069836 is 638960178.

It is an interprime number because it is at equal distance from previous prime (871069831) and next prime (871069841).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (871069831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29625 + ... + 51183.

Almost surely, 2^871069836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871069836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1284631040).

871069836 is an abundant number, since it is smaller than the sum of its proper divisors (1698192244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871069836 is a wasteful number, since it uses less digits than its factorization.

871069836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21623 (or 21621 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 871069836 is about 29513.8922543266. The cubic root of 871069836 is about 955.0314165994.

The spelling of 871069836 in words is "eight hundred seventy-one million, sixty-nine thousand, eight hundred thirty-six".