75987530 has 8 divisors (see below), whose sum is σ = 136777572. Its totient is φ = 30395008.

The previous prime is 75987523. The next prime is 75987533. The reversal of 75987530 is 3578957.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 72914521 + 3073009 = 8539^2 + 1753^2 .

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

It is not an unprimeable number, because it can be changed into a prime (75987533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3799367 + ... + 3799386.

Almost surely, 2^75987530 is an apocalyptic number.

75987530 is a deficient number, since it is larger than the sum of its proper divisors (60790042).

75987530 is a wasteful number, since it uses less digits than its factorization.

75987530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7598760.

The product of its (nonzero) digits is 264600, while the sum is 44.

The square root of 75987530 is about 8717.0826541911. The cubic root of 75987530 is about 423.5591901758.

The spelling of 75987530 in words is "seventy-five million, nine hundred eighty-seven thousand, five hundred thirty".