74487 has 8 divisors (see below), whose sum is σ = 113536. Its totient is φ = 42552.

The previous prime is 74471. The next prime is 74489. The reversal of 74487 is 78447.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74487 - 2⁴ = 74471 is a prime.

It is a Duffinian number.

74487 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 74487.

It is not an unprimeable number, because it can be changed into a prime (74489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1753 + ... + 1794.

It is an arithmetic number, because the mean of its divisors is an integer number (14192).

2⁷⁴⁴⁸⁷ is an apocalyptic number.

74487 is a deficient number, since it is larger than the sum of its proper divisors (39049).

74487 is a wasteful number, since it uses less digits than its factorization.

74487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3557.

The product of its digits is 6272, while the sum is 30.

The square root of 74487 is about 272.9230660827. The cubic root of 74487 is about 42.0752618794.

It can be divided in two parts, 74 and 487, that added together give a triangular number (561 = T₃₃).

The spelling of 74487 in words is "seventy-four thousand, four hundred eighty-seven".