87718773 has 8 divisors (see below), whose sum is σ = 117879808. Its totient is φ = 58018464.

The previous prime is 87718751. The next prime is 87718777. The reversal of 87718773 is 37781778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87718773 - 2¹² = 87714677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87718777) 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 7 ways as a sum of consecutive naturals, for example, 114736 + ... + 115497.

It is an arithmetic number, because the mean of its divisors is an integer number (14734976).

Almost surely, 2^87718773 is an apocalyptic number.

It is an amenable number.

87718773 is a deficient number, since it is larger than the sum of its proper divisors (30161035).

87718773 is a wasteful number, since it uses less digits than its factorization.

87718773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230363.

The product of its digits is 460992, while the sum is 48.

The square root of 87718773 is about 9365.8300753324. The cubic root of 87718773 is about 444.3216918335.

The spelling of 87718773 in words is "eighty-seven million, seven hundred eighteen thousand, seven hundred seventy-three".