872688911 has 2 divisors, whose sum is σ = 872688912. Its totient is φ = 872688910.

The previous prime is 872688899. The next prime is 872688941. The reversal of 872688911 is 119886278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 872688911 - 2¹⁰ = 872687887 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 872688911.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872688941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436344455 + 436344456.

It is an arithmetic number, because the mean of its divisors is an integer number (436344456).

Almost surely, 2^872688911 is an apocalyptic number.

872688911 is a deficient number, since it is larger than the sum of its proper divisors (1).

872688911 is an equidigital number, since it uses as much as digits as its factorization.

872688911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 50.

The square root of 872688911 is about 29541.3085526014. The cubic root of 872688911 is about 955.6227623939.

The spelling of 872688911 in words is "eight hundred seventy-two million, six hundred eighty-eight thousand, nine hundred eleven".