87823693 has 4 divisors (see below), whose sum is σ = 87946560. Its totient is φ = 87700828.

The previous prime is 87823669. The next prime is 87823709. The reversal of 87823693 is 39632878.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87823693 - 2⁵ = 87823661 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 (87823633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60355 + ... + 61792.

It is an arithmetic number, because the mean of its divisors is an integer number (21986640).

Almost surely, 2^87823693 is an apocalyptic number.

It is an amenable number.

87823693 is a deficient number, since it is larger than the sum of its proper divisors (122867).

87823693 is a wasteful number, since it uses less digits than its factorization.

87823693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122866.

The product of its digits is 435456, while the sum is 46.

The square root of 87823693 is about 9371.4296134581. The cubic root of 87823693 is about 444.4987715928.

The spelling of 87823693 in words is "eighty-seven million, eight hundred twenty-three thousand, six hundred ninety-three".