216606486 has 64 divisors (see below), whose sum is σ = 481683456. Its totient is φ = 64627200.

The previous prime is 216606461. The next prime is 216606487. The reversal of 216606486 is 684606612.

216606486 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216606487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192321 + ... + 193443.

It is an arithmetic number, because the mean of its divisors is an integer number (7526304).

Almost surely, 2^216606486 is an apocalyptic number.

216606486 is an abundant number, since it is smaller than the sum of its proper divisors (265076970).

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

216606486 is a wasteful number, since it uses less digits than its factorization.

216606486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 216606486 is about 14717.5570663069. The cubic root of 216606486 is about 600.5610363446.

The spelling of 216606486 in words is "two hundred sixteen million, six hundred six thousand, four hundred eighty-six".