87673 has 4 divisors (see below), whose sum is σ = 88948. Its totient is φ = 86400.

The previous prime is 87671. The next prime is 87679. The reversal of 87673 is 37678.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37678 = 2 ⋅18839.

It can be written as a sum of positive squares in 2 ways, for example, as 16384 + 71289 = 128^2 + 267^2 .

It is a cyclic number.

It is not a de Polignac number, because 87673 - 2¹ = 87671 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (87671) 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, 528 + ... + 673.

It is an arithmetic number, because the mean of its divisors is an integer number (22237).

2⁸⁷⁶⁷³ is an apocalyptic number.

It is an amenable number.

87673 is a deficient number, since it is larger than the sum of its proper divisors (1275).

87673 is a wasteful number, since it uses less digits than its factorization.

87673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274.

The product of its digits is 7056, while the sum is 31.

The square root of 87673 is about 296.0962681291. The cubic root of 87673 is about 44.4244393764.

It can be divided in two parts, 876 and 73, that added together give a palindrome (949).

The spelling of 87673 in words is "eighty-seven thousand, six hundred seventy-three".