7085881 has 12 divisors (see below), whose sum is σ = 7859236. Its totient is φ = 6383520.

The previous prime is 7085873. The next prime is 7085933. The reversal of 7085881 is 1885807.

It can be written as a sum of positive squares in 2 ways, for example, as 2944656 + 4141225 = 1716^2 + 2035^2 .

It is not a de Polignac number, because 7085881 - 2³ = 7085873 is a prime.

It is a super-2 number, since 2×7085881² = 100419419092322, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7085881.

It is not an unprimeable number, because it can be changed into a prime (7085801) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 18811 + ... + 19183.

Almost surely, 2^7085881 is an apocalyptic number.

It is an amenable number.

7085881 is a deficient number, since it is larger than the sum of its proper divisors (773355).

7085881 is a wasteful number, since it uses less digits than its factorization.

7085881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 7085881 is about 2661.9318173086. The cubic root of 7085881 is about 192.0722474779.

The spelling of 7085881 in words is "seven million, eighty-five thousand, eight hundred eighty-one".