74683686 has 128 divisors (see below), whose sum is σ = 203295744. Its totient is φ = 17694720.

The previous prime is 74683663. The next prime is 74683709. The reversal of 74683686 is 68638647.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (74683663) and next prime (74683709).

It is a Curzon number.

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 63 ways as a sum of consecutive naturals, for example, 290470 + ... + 290726.

It is an arithmetic number, because the mean of its divisors is an integer number (1588248).

Almost surely, 2^74683686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74683686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101647872).

74683686 is an abundant number, since it is smaller than the sum of its proper divisors (128612058).

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

74683686 is a wasteful number, since it uses less digits than its factorization.

74683686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334.

The product of its digits is 1161216, while the sum is 48.

The square root of 74683686 is about 8641.9723443205. The cubic root of 74683686 is about 421.1226315291.

The spelling of 74683686 in words is "seventy-four million, six hundred eighty-three thousand, six hundred eighty-six".