84681616 has 20 divisors (see below), whose sum is σ = 164758924. Its totient is φ = 42163200.

The previous prime is 84681589. The next prime is 84681671. The reversal of 84681616 is 61618648.

It can be written as a sum of positive squares in 2 ways, for example, as 65286400 + 19395216 = 8080^2 + 4404^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7125 + ... + 14836.

Almost surely, 2^84681616 is an apocalyptic number.

It is an amenable number.

84681616 is a deficient number, since it is larger than the sum of its proper divisors (80077308).

84681616 is a wasteful number, since it uses less digits than its factorization.

84681616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22210 (or 22204 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 84681616 is about 9202.2614611844. The cubic root of 84681616 is about 439.1333077234.

The spelling of 84681616 in words is "eighty-four million, six hundred eighty-one thousand, six hundred sixteen".