84575881 has 12 divisors (see below), whose sum is σ = 92092188. Its totient is φ = 77635584.

The previous prime is 84575857. The next prime is 84575893. The reversal of 84575881 is 18857548.

It can be written as a sum of positive squares in 6 ways, for example, as 17598025 + 66977856 = 4195^2 + 8184^2 .

It is not a de Polignac number, because 84575881 - 2⁵ = 84575849 is a prime.

It is a super-2 number, since 2×84575881² = 14306159293852322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84575831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31321 + ... + 33913.

It is an arithmetic number, because the mean of its divisors is an integer number (7674349).

Almost surely, 2^84575881 is an apocalyptic number.

It is an amenable number.

84575881 is a deficient number, since it is larger than the sum of its proper divisors (7516307).

84575881 is a wasteful number, since it uses less digits than its factorization.

84575881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812 (or 2799 counting only the distinct ones).

The product of its digits is 358400, while the sum is 46.

The square root of 84575881 is about 9196.5146115254. The cubic root of 84575881 is about 438.9504616659.

The spelling of 84575881 in words is "eighty-four million, five hundred seventy-five thousand, eight hundred eighty-one".