87539263 has 8 divisors (see below), whose sum is σ = 100139040. Its totient is φ = 74963040.

The previous prime is 87539227. The next prime is 87539267. The reversal of 87539263 is 36293578.

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 87539263 - 2¹³ = 87531071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87539267) 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 7 ways as a sum of consecutive naturals, for example, 2973 + ... + 13561.

It is an arithmetic number, because the mean of its divisors is an integer number (12517380).

Almost surely, 2^87539263 is an apocalyptic number.

87539263 is a deficient number, since it is larger than the sum of its proper divisors (12599777).

87539263 is a wasteful number, since it uses less digits than its factorization.

87539263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11777.

The product of its digits is 272160, while the sum is 43.

The square root of 87539263 is about 9356.2419271842. The cubic root of 87539263 is about 444.0183943222.

The spelling of 87539263 in words is "eighty-seven million, five hundred thirty-nine thousand, two hundred sixty-three".