84668724 has 72 divisors (see below), whose sum is σ = 247752960. Its totient is φ = 23879232.

The previous prime is 84668713. The next prime is 84668737. The reversal of 84668724 is 42786648.

It is a self number, because there is not a number n which added to its sum of digits gives 84668724.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17782 + ... + 22034.

Almost surely, 2^84668724 is an apocalyptic number.

84668724 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84668724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123876480).

84668724 is an abundant number, since it is smaller than the sum of its proper divisors (163084236).

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

84668724 is a wasteful number, since it uses less digits than its factorization.

84668724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4349 (or 4344 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 84668724 is about 9201.5609545337. The cubic root of 84668724 is about 439.1110219185. Note that the first 3 decimals are identical.

The spelling of 84668724 in words is "eighty-four million, six hundred sixty-eight thousand, seven hundred twenty-four".