87404585 has 8 divisors (see below), whose sum is σ = 105121800. Its totient is φ = 69766144.

The previous prime is 87404563. The next prime is 87404587. The reversal of 87404585 is 58540478.

It can be written as a sum of positive squares in 4 ways, for example, as 784 + 87403801 = 28^2 + 9349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87404585 - 2⁸ = 87404329 is a prime.

It is a super-2 number, since 2×87404585² = 15279122958044450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87404587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17222 + ... + 21711.

It is an arithmetic number, because the mean of its divisors is an integer number (13140225).

Almost surely, 2^87404585 is an apocalyptic number.

It is an amenable number.

87404585 is a deficient number, since it is larger than the sum of its proper divisors (17717215).

87404585 is a wasteful number, since it uses less digits than its factorization.

87404585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39387.

The product of its (nonzero) digits is 179200, while the sum is 41.

The square root of 87404585 is about 9349.0419295241. The cubic root of 87404585 is about 443.7905719698.

The spelling of 87404585 in words is "eighty-seven million, four hundred four thousand, five hundred eighty-five".