74387 has 4 divisors (see below), whose sum is σ = 75480. Its totient is φ = 73296.

The previous prime is 74383. The next prime is 74411. The reversal of 74387 is 78347.

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 74387 - 2² = 74383 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437 + ... + 582.

It is an arithmetic number, because the mean of its divisors is an integer number (18870).

2⁷⁴³⁸⁷ is an apocalyptic number.

74387 is a deficient number, since it is larger than the sum of its proper divisors (1093).

74387 is a wasteful number, since it uses less digits than its factorization.

74387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092.

The product of its digits is 4704, while the sum is 29.

The square root of 74387 is about 272.7398027425. The cubic root of 74387 is about 42.0564245409.

The spelling of 74387 in words is "seventy-four thousand, three hundred eighty-seven".