218007485 has 8 divisors (see below), whose sum is σ = 262924800. Its totient is φ = 173528784.

The previous prime is 218007451. The next prime is 218007499. The reversal of 218007485 is 584700812.

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 218007485 - 2⁶ = 218007421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108557 + ... + 110546.

It is an arithmetic number, because the mean of its divisors is an integer number (32865600).

Almost surely, 2^218007485 is an apocalyptic number.

It is an amenable number.

218007485 is a deficient number, since it is larger than the sum of its proper divisors (44917315).

218007485 is a wasteful number, since it uses less digits than its factorization.

218007485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219307.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 218007485 is about 14765.0765321416. The cubic root of 218007485 is about 601.8530535036.

The spelling of 218007485 in words is "two hundred eighteen million, seven thousand, four hundred eighty-five".