87112847 has 4 divisors (see below), whose sum is σ = 87550800. Its totient is φ = 86674896.

The previous prime is 87112841. The next prime is 87112859. The reversal of 87112847 is 74821178.

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 87112847 - 2⁶ = 87112783 is a prime.

It is a super-2 number, since 2×87112847² = 15177296224890818, which contains 22 as substring.

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 87112847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87112841) 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, 218678 + ... + 219075.

It is an arithmetic number, because the mean of its divisors is an integer number (21887700).

Almost surely, 2^87112847 is an apocalyptic number.

87112847 is a deficient number, since it is larger than the sum of its proper divisors (437953).

87112847 is a wasteful number, since it uses less digits than its factorization.

87112847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437952.

The product of its digits is 25088, while the sum is 38.

The square root of 87112847 is about 9333.4263269177. The cubic root of 87112847 is about 443.2962619362.

The spelling of 87112847 in words is "eighty-seven million, one hundred twelve thousand, eight hundred forty-seven".