870711385 has 16 divisors (see below), whose sum is σ = 1100736000. Its totient is φ = 659373696.

The previous prime is 870711349. The next prime is 870711397. The reversal of 870711385 is 583117078.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 870711385 - 2¹⁷ = 870580313 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 145941 + ... + 151789.

It is an arithmetic number, because the mean of its divisors is an integer number (68796000).

Almost surely, 2^870711385 is an apocalyptic number.

It is an amenable number.

870711385 is a deficient number, since it is larger than the sum of its proper divisors (230024615).

870711385 is a wasteful number, since it uses less digits than its factorization.

870711385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7440.

The product of its (nonzero) digits is 47040, while the sum is 40.

The square root of 870711385 is about 29507.8190485166. The cubic root of 870711385 is about 954.9003980441.

The spelling of 870711385 in words is "eight hundred seventy million, seven hundred eleven thousand, three hundred eighty-five".