87235873 has 4 divisors (see below), whose sum is σ = 87620400. Its totient is φ = 86851348.

The previous prime is 87235853. The next prime is 87235903. The reversal of 87235873 is 37853278.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37853278 = 2 ⋅18926639.

It is a cyclic number.

It is not a de Polignac number, because 87235873 - 2⁹ = 87235361 is a prime.

It is a super-2 number, since 2×87235873² = 15220195076144258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87235843) 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, 191923 + ... + 192376.

It is an arithmetic number, because the mean of its divisors is an integer number (21905100).

Almost surely, 2^87235873 is an apocalyptic number.

It is an amenable number.

87235873 is a deficient number, since it is larger than the sum of its proper divisors (384527).

87235873 is a wasteful number, since it uses less digits than its factorization.

87235873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384526.

The product of its digits is 282240, while the sum is 43.

The square root of 87235873 is about 9340.0146145496. The cubic root of 87235873 is about 443.5048469860.

The spelling of 87235873 in words is "eighty-seven million, two hundred thirty-five thousand, eight hundred seventy-three".