87734573 has 4 divisors (see below), whose sum is σ = 87753660. Its totient is φ = 87715488.

The previous prime is 87734567. The next prime is 87734579. The reversal of 87734573 is 37543778.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37543778 = 2 ⋅18771889.

It is an interprime number because it is at equal distance from previous prime (87734567) and next prime (87734579).

It can be written as a sum of positive squares in 2 ways, for example, as 46812964 + 40921609 = 6842^2 + 6397^2 .

It is a cyclic number.

It is not a de Polignac number, because 87734573 - 2²⁰ = 86685997 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 (87734579) 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, 2033 + ... + 13401.

It is an arithmetic number, because the mean of its divisors is an integer number (21938415).

Almost surely, 2^87734573 is an apocalyptic number.

It is an amenable number.

87734573 is a deficient number, since it is larger than the sum of its proper divisors (19087).

87734573 is a wasteful number, since it uses less digits than its factorization.

87734573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19086.

The product of its digits is 493920, while the sum is 44.

The square root of 87734573 is about 9366.6735290604. The cubic root of 87734573 is about 444.3483674660.

The spelling of 87734573 in words is "eighty-seven million, seven hundred thirty-four thousand, five hundred seventy-three".