75387 has 8 divisors (see below), whose sum is σ = 108304. Its totient is φ = 46368.

The previous prime is 75377. The next prime is 75389. The reversal of 75387 is 78357.

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

It is not a de Polignac number, because 75387 - 2⁶ = 75323 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (75389) 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, 928 + ... + 1005.

It is an arithmetic number, because the mean of its divisors is an integer number (13538).

2⁷⁵³⁸⁷ is an apocalyptic number.

75387 is a deficient number, since it is larger than the sum of its proper divisors (32917).

75387 is a wasteful number, since it uses less digits than its factorization.

75387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949.

The product of its digits is 5880, while the sum is 30.

The square root of 75387 is about 274.5669317307. The cubic root of 75387 is about 42.2440440702.

Subtracting from 75387 its sum of digits (30), we obtain a palindrome (75357).

The spelling of 75387 in words is "seventy-five thousand, three hundred eighty-seven".