87345117 has 6 divisors (see below), whose sum is σ = 126165182. Its totient is φ = 58230072.

The previous prime is 87345091. The next prime is 87345121. The reversal of 87345117 is 71154378.

It can be written as a sum of positive squares in only one way, i.e., 73462041 + 13883076 = 8571^2 + 3726^2 .

It is not a de Polignac number, because 87345117 - 2¹² = 87341021 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 (87345217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4852498 + ... + 4852515.

Almost surely, 2^87345117 is an apocalyptic number.

It is an amenable number.

87345117 is a deficient number, since it is larger than the sum of its proper divisors (38820065).

87345117 is a wasteful number, since it uses less digits than its factorization.

87345117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9705019 (or 9705016 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 87345117 is about 9345.8609555246. The cubic root of 87345117 is about 443.6899009530.

The spelling of 87345117 in words is "eighty-seven million, three hundred forty-five thousand, one hundred seventeen".