75487 has 8 divisors (see below), whose sum is σ = 82800. Its totient is φ = 68544.

The previous prime is 75479. The next prime is 75503. The reversal of 75487 is 78457.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 75487 - 2³ = 75479 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483 + ... + 619.

It is an arithmetic number, because the mean of its divisors is an integer number (10350).

2⁷⁵⁴⁸⁷ is an apocalyptic number.

75487 is a deficient number, since it is larger than the sum of its proper divisors (7313).

75487 is a wasteful number, since it uses less digits than its factorization.

75487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185.

The product of its digits is 7840, while the sum is 31.

The square root of 75487 is about 274.7489763402. The cubic root of 75487 is about 42.2627145656.

It can be divided in two parts, 754 and 87, that added together give a square (841 = 29²).

The spelling of 75487 in words is "seventy-five thousand, four hundred eighty-seven".