74487287 has 4 divisors (see below), whose sum is σ = 85128336. Its totient is φ = 63846240.

The previous prime is 74487269. The next prime is 74487289. The reversal of 74487287 is 78278447.

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 74487287 - 2²⁴ = 57710071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74487289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5320514 + ... + 5320527.

It is an arithmetic number, because the mean of its divisors is an integer number (21282084).

Almost surely, 2^74487287 is an apocalyptic number.

74487287 is a deficient number, since it is larger than the sum of its proper divisors (10641049).

74487287 is a wasteful number, since it uses less digits than its factorization.

74487287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10641048.

The product of its digits is 702464, while the sum is 47.

The square root of 74487287 is about 8630.6017750792. The cubic root of 74487287 is about 420.7531591824.

The spelling of 74487287 in words is "seventy-four million, four hundred eighty-seven thousand, two hundred eighty-seven".