87361117 has 4 divisors (see below), whose sum is σ = 87640540. Its totient is φ = 87081696.

The previous prime is 87361111. The next prime is 87361121. The reversal of 87361117 is 71116378.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12348196 + 75012921 = 3514^2 + 8661^2 .

It is a cyclic number.

It is not a de Polignac number, because 87361117 - 2⁷ = 87360989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87361111) 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, 139242 + ... + 139867.

It is an arithmetic number, because the mean of its divisors is an integer number (21910135).

Almost surely, 2^87361117 is an apocalyptic number.

It is an amenable number.

87361117 is a deficient number, since it is larger than the sum of its proper divisors (279423).

87361117 is a wasteful number, since it uses less digits than its factorization.

87361117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279422.

The product of its digits is 7056, while the sum is 34.

The square root of 87361117 is about 9346.7169102311. The cubic root of 87361117 is about 443.7169912099.

It can be divided in two parts, 87361 and 117, that added together give a palindrome (87478).

The spelling of 87361117 in words is "eighty-seven million, three hundred sixty-one thousand, one hundred seventeen".