87023539 has 4 divisors (see below), whose sum is σ = 87190456. Its totient is φ = 86856624.

The previous prime is 87023501. The next prime is 87023543. The reversal of 87023539 is 93532078.

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 87023539 - 2⁷ = 87023411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87023498 and 87023507.

It is not an unprimeable number, because it can be changed into a prime (87023549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82674 + ... + 83719.

It is an arithmetic number, because the mean of its divisors is an integer number (21797614).

Almost surely, 2^87023539 is an apocalyptic number.

87023539 is a deficient number, since it is larger than the sum of its proper divisors (166917).

87023539 is a wasteful number, since it uses less digits than its factorization.

87023539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166916.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 87023539 is about 9328.6407905975. The cubic root of 87023539 is about 443.1447211826.

The spelling of 87023539 in words is "eighty-seven million, twenty-three thousand, five hundred thirty-nine".