87163423 has 4 divisors (see below), whose sum is σ = 87619968. Its totient is φ = 86706880.

The previous prime is 87163421. The next prime is 87163457. The reversal of 87163423 is 32436178.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87163423 - 2¹ = 87163421 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 (87163421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227986 + ... + 228367.

It is an arithmetic number, because the mean of its divisors is an integer number (21904992).

Almost surely, 2^87163423 is an apocalyptic number.

87163423 is a deficient number, since it is larger than the sum of its proper divisors (456545).

87163423 is a wasteful number, since it uses less digits than its factorization.

87163423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456544.

The product of its digits is 24192, while the sum is 34.

The square root of 87163423 is about 9336.1353353516. The cubic root of 87163423 is about 443.3820350264.

The spelling of 87163423 in words is "eighty-seven million, one hundred sixty-three thousand, four hundred twenty-three".