74885686 has 4 divisors (see below), whose sum is σ = 112328532. Its totient is φ = 37442842.

The previous prime is 74885683. The next prime is 74885687. The reversal of 74885686 is 68658847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68658847 = 1747 ⋅39301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74885683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18721420 + ... + 18721423.

It is an arithmetic number, because the mean of its divisors is an integer number (28082133).

Almost surely, 2^74885686 is an apocalyptic number.

74885686 is a deficient number, since it is larger than the sum of its proper divisors (37442846).

74885686 is a wasteful number, since it uses less digits than its factorization.

74885686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37442845.

The product of its digits is 2580480, while the sum is 52.

The square root of 74885686 is about 8653.6515991805. The cubic root of 74885686 is about 421.5019655650.

The spelling of 74885686 in words is "seventy-four million, eight hundred eighty-five thousand, six hundred eighty-six".