87316047 has 72 divisors (see below), whose sum is σ = 159868800. Its totient is φ = 44950464.

The previous prime is 87316043. The next prime is 87316067. The reversal of 87316047 is 74061378.

It is not a de Polignac number, because 87316047 - 2² = 87316043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87316043) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 628104 + ... + 628242.

It is an arithmetic number, because the mean of its divisors is an integer number (2220400).

Almost surely, 2^87316047 is an apocalyptic number.

87316047 is a deficient number, since it is larger than the sum of its proper divisors (72552753).

87316047 is a wasteful number, since it uses less digits than its factorization.

87316047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 87316047 is about 9344.3055921775. The cubic root of 87316047 is about 443.6406728754.

The spelling of 87316047 in words is "eighty-seven million, three hundred sixteen thousand, forty-seven".