87915673 has 4 divisors (see below), whose sum is σ = 88498048. Its totient is φ = 87333300.

The previous prime is 87915661. The next prime is 87915691. The reversal of 87915673 is 37651978.

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 not a de Polignac number, because 87915673 - 2¹⁷ = 87784601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87915643) 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, 290961 + ... + 291262.

It is an arithmetic number, because the mean of its divisors is an integer number (22124512).

Almost surely, 2^87915673 is an apocalyptic number.

It is an amenable number.

87915673 is a deficient number, since it is larger than the sum of its proper divisors (582375).

87915673 is a wasteful number, since it uses less digits than its factorization.

87915673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582374.

The product of its digits is 317520, while the sum is 46.

The square root of 87915673 is about 9376.3357981676. The cubic root of 87915673 is about 444.6538957611.

It can be divided in two parts, 87915 and 673, that added together give a palindrome (88588).

The spelling of 87915673 in words is "eighty-seven million, nine hundred fifteen thousand, six hundred seventy-three".