985070881 has 4 divisors (see below), whose sum is σ = 986526612. Its totient is φ = 983615152.

The previous prime is 985070873. The next prime is 985070897. The reversal of 985070881 is 188070589.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 584430625 + 400640256 = 24175^2 + 20016^2 .

It is a cyclic number.

It is not a de Polignac number, because 985070881 - 2³ = 985070873 is a prime.

It is a super-2 number, since 2×985070881² = 1940729281188232322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985070081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 726850 + ... + 728203.

It is an arithmetic number, because the mean of its divisors is an integer number (246631653).

Almost surely, 2^985070881 is an apocalyptic number.

It is an amenable number.

985070881 is a deficient number, since it is larger than the sum of its proper divisors (1455731).

985070881 is a wasteful number, since it uses less digits than its factorization.

985070881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455730.

The product of its (nonzero) digits is 161280, while the sum is 46.

The square root of 985070881 is about 31385.8388608621. The cubic root of 985070881 is about 994.9986552510.

The spelling of 985070881 in words is "nine hundred eighty-five million, seventy thousand, eight hundred eighty-one".