74560387 has 4 divisors (see below), whose sum is σ = 81338616. Its totient is φ = 67782160.

The previous prime is 74560379. The next prime is 74560391. The reversal of 74560387 is 78306547.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74560387 - 2³ = 74560379 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74560337) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3389098 + ... + 3389119.

It is an arithmetic number, because the mean of its divisors is an integer number (20334654).

Almost surely, 2^74560387 is an apocalyptic number.

74560387 is a deficient number, since it is larger than the sum of its proper divisors (6778229).

74560387 is a wasteful number, since it uses less digits than its factorization.

74560387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778228.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 74560387 is about 8634.8356672261. The cubic root of 74560387 is about 420.8907531319.

It can be divided in two parts, 74560 and 387, that added together give a palindrome (74947).

The spelling of 74560387 in words is "seventy-four million, five hundred sixty thousand, three hundred eighty-seven".