74742786 has 12 divisors (see below), whose sum is σ = 161942742. Its totient is φ = 24914256.

The previous prime is 74742781. The next prime is 74742797. The reversal of 74742786 is 68724747.

It can be written as a sum of positive squares in only one way, i.e., 74287161 + 455625 = 8619^2 + 675^2 .

It is not an unprimeable number, because it can be changed into a prime (74742781) 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 5 ways as a sum of consecutive naturals, for example, 2076171 + ... + 2076206.

Almost surely, 2^74742786 is an apocalyptic number.

74742786 is an abundant number, since it is smaller than the sum of its proper divisors (87199956).

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

74742786 is a wasteful number, since it uses less digits than its factorization.

74742786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4152385 (or 4152382 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 74742786 is about 8645.3910264372. The cubic root of 74742786 is about 421.2336856147.

The spelling of 74742786 in words is "seventy-four million, seven hundred forty-two thousand, seven hundred eighty-six".