84993636 has 72 divisors (see below), whose sum is σ = 248465280. Its totient is φ = 22413888.

The previous prime is 84993619. The next prime is 84993637. The reversal of 84993636 is 63639948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84993637) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2085 + ... + 13203.

Almost surely, 2^84993636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84993636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124232640).

84993636 is an abundant number, since it is smaller than the sum of its proper divisors (163471644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84993636 is a wasteful number, since it uses less digits than its factorization.

84993636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11153 (or 11144 counting only the distinct ones).

The product of its digits is 839808, while the sum is 48.

The square root of 84993636 is about 9219.1993144741. The cubic root of 84993636 is about 439.6719938345.

The spelling of 84993636 in words is "eighty-four million, nine hundred ninety-three thousand, six hundred thirty-six".