87718443 has 4 divisors (see below), whose sum is σ = 116957928. Its totient is φ = 58478960.

The previous prime is 87718381. The next prime is 87718447. The reversal of 87718443 is 34481778.

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 87718443 - 2²⁰ = 86669867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87718395 and 87718404.

It is not an unprimeable number, because it can be changed into a prime (87718447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14619738 + ... + 14619743.

It is an arithmetic number, because the mean of its divisors is an integer number (29239482).

Almost surely, 2^87718443 is an apocalyptic number.

87718443 is a deficient number, since it is larger than the sum of its proper divisors (29239485).

87718443 is a wasteful number, since it uses less digits than its factorization.

87718443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29239484.

The product of its digits is 150528, while the sum is 42.

The square root of 87718443 is about 9365.8124580839. The cubic root of 87718443 is about 444.3211346500.

The spelling of 87718443 in words is "eighty-seven million, seven hundred eighteen thousand, four hundred forty-three".