87146117 has 4 divisors (see below), whose sum is σ = 87324096. Its totient is φ = 86968140.

The previous prime is 87146113. The next prime is 87146119. The reversal of 87146117 is 71164178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87146117 - 2² = 87146113 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 (87146113) 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, 88253 + ... + 89234.

It is an arithmetic number, because the mean of its divisors is an integer number (21831024).

Almost surely, 2^87146117 is an apocalyptic number.

It is an amenable number.

87146117 is a deficient number, since it is larger than the sum of its proper divisors (177979).

87146117 is a wasteful number, since it uses less digits than its factorization.

87146117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177978.

The product of its digits is 9408, while the sum is 35.

The square root of 87146117 is about 9335.2084604469. The cubic root of 87146117 is about 443.3526890878.

The spelling of 87146117 in words is "eighty-seven million, one hundred forty-six thousand, one hundred seventeen".