87358817 has 24 divisors (see below), whose sum is σ = 113236200. Its totient is φ = 66721536.

The previous prime is 87358781. The next prime is 87358819. The reversal of 87358817 is 71885378.

It can be written as a sum of positive squares in 4 ways, for example, as 1073296 + 86285521 = 1036^2 + 9289^2 .

It is not a de Polignac number, because 87358817 - 2¹⁶ = 87293281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87358819) 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, 16109 + ... + 20837.

It is an arithmetic number, because the mean of its divisors is an integer number (4718175).

Almost surely, 2^87358817 is an apocalyptic number.

It is an amenable number.

87358817 is a deficient number, since it is larger than the sum of its proper divisors (25877383).

87358817 is a wasteful number, since it uses less digits than its factorization.

87358817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785 (or 4778 counting only the distinct ones).

The product of its digits is 376320, while the sum is 47.

The square root of 87358817 is about 9346.5938715663. The cubic root of 87358817 is about 443.7130971891.

The spelling of 87358817 in words is "eighty-seven million, three hundred fifty-eight thousand, eight hundred seventeen".