74785456 has 10 divisors (see below), whose sum is σ = 144896852. Its totient is φ = 37392720.

The previous prime is 74785453. The next prime is 74785457. The reversal of 74785456 is 65458747.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (74785453) 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 as a sum of consecutive naturals, namely, 2337030 + ... + 2337061.

Almost surely, 2^74785456 is an apocalyptic number.

It is an amenable number.

74785456 is a deficient number, since it is larger than the sum of its proper divisors (70111396).

74785456 is a wasteful number, since it uses less digits than its factorization.

74785456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674099 (or 4674093 counting only the distinct ones).

The product of its digits is 940800, while the sum is 46.

The square root of 74785456 is about 8647.8584632266. The cubic root of 74785456 is about 421.3138299025.

The spelling of 74785456 in words is "seventy-four million, seven hundred eighty-five thousand, four hundred fifty-six".