87323639 has 16 divisors (see below), whose sum is σ = 99372000. Its totient is φ = 76070016.

The previous prime is 87323633. The next prime is 87323641. The reversal of 87323639 is 93632378.

It is a cyclic number.

It is not a de Polignac number, because 87323639 - 2⁴ = 87323623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87323596 and 87323605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87323633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85697 + ... + 86709.

It is an arithmetic number, because the mean of its divisors is an integer number (6210750).

Almost surely, 2^87323639 is an apocalyptic number.

87323639 is a deficient number, since it is larger than the sum of its proper divisors (12048361).

87323639 is a wasteful number, since it uses less digits than its factorization.

87323639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394.

The product of its digits is 163296, while the sum is 41.

The square root of 87323639 is about 9344.7118200617. The cubic root of 87323639 is about 443.6535304676.

The spelling of 87323639 in words is "eighty-seven million, three hundred twenty-three thousand, six hundred thirty-nine".