87315673 has 4 divisors (see below), whose sum is σ = 88618960. Its totient is φ = 86012388.

The previous prime is 87315661. The next prime is 87315703. The reversal of 87315673 is 37651378.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87315673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87315643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651543 + ... + 651676.

It is an arithmetic number, because the mean of its divisors is an integer number (22154740).

Almost surely, 2^87315673 is an apocalyptic number.

It is an amenable number.

87315673 is a deficient number, since it is larger than the sum of its proper divisors (1303287).

87315673 is a wasteful number, since it uses less digits than its factorization.

87315673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303286.

The product of its digits is 105840, while the sum is 40.

The square root of 87315673 is about 9344.2855799681. The cubic root of 87315673 is about 443.6400394605.

The spelling of 87315673 in words is "eighty-seven million, three hundred fifteen thousand, six hundred seventy-three".