87158385 has 24 divisors (see below), whose sum is σ = 157644864. Its totient is φ = 44462880.

The previous prime is 87158381. The next prime is 87158387. The reversal of 87158385 is 58385178.

It is a happy number.

It is not a de Polignac number, because 87158385 - 2² = 87158381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87158385.

It is not an unprimeable number, because it can be changed into a prime (87158381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41071 + ... + 43140.

It is an arithmetic number, because the mean of its divisors is an integer number (6568536).

Almost surely, 2^87158385 is an apocalyptic number.

It is an amenable number.

87158385 is a deficient number, since it is larger than the sum of its proper divisors (70486479).

87158385 is a wasteful number, since it uses less digits than its factorization.

87158385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84245 (or 84242 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 87158385 is about 9335.8655195970. The cubic root of 87158385 is about 443.3734924457.

The spelling of 87158385 in words is "eighty-seven million, one hundred fifty-eight thousand, three hundred eighty-five".