87604218 has 48 divisors (see below), whose sum is σ = 205228296. Its totient is φ = 26847360.

The previous prime is 87604199. The next prime is 87604229. The reversal of 87604218 is 81240678.

It can be written as a sum of positive squares in 4 ways, for example, as 58476609 + 29127609 = 7647^2 + 5397^2 .

It is a super-2 number, since 2×87604218² = 15348998022783048, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73588 + ... + 74768.

Almost surely, 2^87604218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87604218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102614148).

87604218 is an abundant number, since it is smaller than the sum of its proper divisors (117624078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87604218 is a wasteful number, since it uses less digits than its factorization.

87604218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1516 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 87604218 is about 9359.7124955845. The cubic root of 87604218 is about 444.1281891855.

The spelling of 87604218 in words is "eighty-seven million, six hundred four thousand, two hundred eighteen".