87117827 has 4 divisors (see below), whose sum is σ = 90121920. Its totient is φ = 84113736.

The previous prime is 87117799. The next prime is 87117829. The reversal of 87117827 is 72871178.

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 87117827 - 2⁶ = 87117763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87117829) 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, 1502003 + ... + 1502060.

It is an arithmetic number, because the mean of its divisors is an integer number (22530480).

Almost surely, 2^87117827 is an apocalyptic number.

87117827 is a deficient number, since it is larger than the sum of its proper divisors (3004093).

87117827 is a wasteful number, since it uses less digits than its factorization.

87117827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004092.

The product of its digits is 43904, while the sum is 41.

The square root of 87117827 is about 9333.6931061611. The cubic root of 87117827 is about 443.3047091148.

The spelling of 87117827 in words is "eighty-seven million, one hundred seventeen thousand, eight hundred twenty-seven".