87916623 has 4 divisors (see below), whose sum is σ = 117222168. Its totient is φ = 58611080.

The previous prime is 87916607. The next prime is 87916643. The reversal of 87916623 is 32661978.

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 87916623 - 2⁴ = 87916607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87916643) 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, 14652768 + ... + 14652773.

It is an arithmetic number, because the mean of its divisors is an integer number (29305542).

Almost surely, 2^87916623 is an apocalyptic number.

87916623 is a deficient number, since it is larger than the sum of its proper divisors (29305545).

87916623 is a wasteful number, since it uses less digits than its factorization.

87916623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29305544.

The product of its digits is 108864, while the sum is 42.

The square root of 87916623 is about 9376.3864574792. The cubic root of 87916623 is about 444.6554973704.

The spelling of 87916623 in words is "eighty-seven million, nine hundred sixteen thousand, six hundred twenty-three".