84691636 has 12 divisors (see below), whose sum is σ = 148274980. Its totient is φ = 42327360.

The previous prime is 84691627. The next prime is 84691643. The reversal of 84691636 is 63619648.

It can be written as a sum of positive squares in 2 ways, for example, as 54110736 + 30580900 = 7356^2 + 5530^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 84691592 and 84691601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14560 + ... + 19528.

Almost surely, 2^84691636 is an apocalyptic number.

It is an amenable number.

84691636 is a deficient number, since it is larger than the sum of its proper divisors (63583344).

84691636 is a wasteful number, since it uses less digits than its factorization.

84691636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9234 (or 9232 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 84691636 is about 9202.8058764705. The cubic root of 84691636 is about 439.1506272725.

The spelling of 84691636 in words is "eighty-four million, six hundred ninety-one thousand, six hundred thirty-six".