87623 has 2 divisors, whose sum is σ = 87624. Its totient is φ = 87622.

The previous prime is 87613. The next prime is 87629. The reversal of 87623 is 32678.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87623 - 2⁶ = 87559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87592 and 87601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43811 + 43812.

It is an arithmetic number, because the mean of its divisors is an integer number (43812).

2⁸⁷⁶²³ is an apocalyptic number.

87623 is a deficient number, since it is larger than the sum of its proper divisors (1).

87623 is an equidigital number, since it uses as much as digits as its factorization.

87623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 87623 is about 296.0118240882. The cubic root of 87623 is about 44.4159926697.

Subtracting from 87623 its reverse (32678), we obtain a palindrome (54945).

The spelling of 87623 in words is "eighty-seven thousand, six hundred twenty-three".