87709163 has 4 divisors (see below), whose sum is σ = 87738840. Its totient is φ = 87679488.

The previous prime is 87709157. The next prime is 87709201. The reversal of 87709163 is 36190778.

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 87709163 - 2⁴ = 87709147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87709163.

It is not an unprimeable number, because it can be changed into a prime (87709123) 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, 9845 + ... + 16502.

It is an arithmetic number, because the mean of its divisors is an integer number (21934710).

Almost surely, 2^87709163 is an apocalyptic number.

87709163 is a deficient number, since it is larger than the sum of its proper divisors (29677).

87709163 is a wasteful number, since it uses less digits than its factorization.

87709163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29676.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 87709163 is about 9365.3170261342. The cubic root of 87709163 is about 444.3054654042.

The spelling of 87709163 in words is "eighty-seven million, seven hundred nine thousand, one hundred sixty-three".