87344573 has 4 divisors (see below), whose sum is σ = 88541148. Its totient is φ = 86148000.

The previous prime is 87344527. The next prime is 87344581. The reversal of 87344573 is 37544378.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55681444 + 31663129 = 7462^2 + 5627^2 .

It is a cyclic number.

It is not a de Polignac number, because 87344573 - 2¹⁰ = 87343549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87344573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87344513) 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, 598178 + ... + 598323.

It is an arithmetic number, because the mean of its divisors is an integer number (22135287).

Almost surely, 2^87344573 is an apocalyptic number.

It is an amenable number.

87344573 is a deficient number, since it is larger than the sum of its proper divisors (1196575).

87344573 is a wasteful number, since it uses less digits than its factorization.

87344573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196574.

The product of its digits is 282240, while the sum is 41.

The square root of 87344573 is about 9345.8318516866. The cubic root of 87344573 is about 443.6889798261.

The spelling of 87344573 in words is "eighty-seven million, three hundred forty-four thousand, five hundred seventy-three".