84773681 has 4 divisors (see below), whose sum is σ = 85175664. Its totient is φ = 84371700.

The previous prime is 84773677. The next prime is 84773707. The reversal of 84773681 is 18637748.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84773681 - 2² = 84773677 is a prime.

It is a super-2 number, since 2×84773681² = 14373153980579522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84773621) 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, 200675 + ... + 201096.

It is an arithmetic number, because the mean of its divisors is an integer number (21293916).

Almost surely, 2^84773681 is an apocalyptic number.

It is an amenable number.

84773681 is a deficient number, since it is larger than the sum of its proper divisors (401983).

84773681 is a wasteful number, since it uses less digits than its factorization.

84773681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401982.

The product of its digits is 225792, while the sum is 44.

The square root of 84773681 is about 9207.2624052972. The cubic root of 84773681 is about 439.2923905227.

The spelling of 84773681 in words is "eighty-four million, seven hundred seventy-three thousand, six hundred eighty-one".