84646881 has 36 divisors (see below), whose sum is σ = 141501360. Its totient is φ = 48589200.

The previous prime is 84646879. The next prime is 84646889. The reversal of 84646881 is 18864648.

It is not a de Polignac number, because 84646881 - 2¹ = 84646879 is a prime.

It is a super-2 number, since 2×84646881² = 14330188926056322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84646889) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18646 + ... + 22736.

Almost surely, 2^84646881 is an apocalyptic number.

It is an amenable number.

84646881 is a deficient number, since it is larger than the sum of its proper divisors (56854479).

84646881 is a wasteful number, since it uses less digits than its factorization.

84646881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138 (or 4124 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 84646881 is about 9200.3739597910. The cubic root of 84646881 is about 439.0732577693.

The spelling of 84646881 in words is "eighty-four million, six hundred forty-six thousand, eight hundred eighty-one".