87335173 has 4 divisors (see below), whose sum is σ = 88387488. Its totient is φ = 86282860.

The previous prime is 87335167. The next prime is 87335177. The reversal of 87335173 is 37153378.

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: 37153378 = 2 ⋅18576689.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87335173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87335177) 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, 526033 + ... + 526198.

It is an arithmetic number, because the mean of its divisors is an integer number (22096872).

Almost surely, 2^87335173 is an apocalyptic number.

87335173 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

87335173 is a deficient number, since it is larger than the sum of its proper divisors (1052315).

87335173 is a wasteful number, since it uses less digits than its factorization.

87335173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052314.

The product of its digits is 52920, while the sum is 37.

The square root of 87335173 is about 9345.3289401711. The cubic root of 87335173 is about 443.6730626913.

It can be divided in two parts, 873 and 35173, that added together give a triangular number (36046 = T₂₆₈).

The spelling of 87335173 in words is "eighty-seven million, three hundred thirty-five thousand, one hundred seventy-three".