87534787 has 4 divisors (see below), whose sum is σ = 87565320. Its totient is φ = 87504256.

The previous prime is 87534779. The next prime is 87534791. The reversal of 87534787 is 78743578.

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 87534787 - 2³ = 87534779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87534787.

It is not an unprimeable number, because it can be changed into a prime (87534737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10462 + ... + 16867.

It is an arithmetic number, because the mean of its divisors is an integer number (21891330).

Almost surely, 2^87534787 is an apocalyptic number.

87534787 is a deficient number, since it is larger than the sum of its proper divisors (30533).

87534787 is a wasteful number, since it uses less digits than its factorization.

87534787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30532.

The product of its digits is 1317120, while the sum is 49.

The square root of 87534787 is about 9356.0027255233. The cubic root of 87534787 is about 444.0108264411.

The spelling of 87534787 in words is "eighty-seven million, five hundred thirty-four thousand, seven hundred eighty-seven".