87816347 has 4 divisors (see below), whose sum is σ = 92438280. Its totient is φ = 83194416.

The previous prime is 87816343. The next prime is 87816349. The reversal of 87816347 is 74361878.

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 87816347 - 2² = 87816343 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87816298 and 87816307.

It is not an unprimeable number, because it can be changed into a prime (87816341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2310938 + ... + 2310975.

It is an arithmetic number, because the mean of its divisors is an integer number (23109570).

Almost surely, 2^87816347 is an apocalyptic number.

87816347 is a deficient number, since it is larger than the sum of its proper divisors (4621933).

87816347 is a wasteful number, since it uses less digits than its factorization.

87816347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4621932.

The product of its digits is 225792, while the sum is 44.

The square root of 87816347 is about 9371.0376693299. The cubic root of 87816347 is about 444.4863779022.

The spelling of 87816347 in words is "eighty-seven million, eight hundred sixteen thousand, three hundred forty-seven".