216649062 has 96 divisors (see below), whose sum is σ = 552015360. Its totient is φ = 60134400.

The previous prime is 216649057. The next prime is 216649087. The reversal of 216649062 is 260946612.

216649062 is a `hidden beast` number, since 2 + 1 + 6 + 649 + 0 + 6 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1122438 + ... + 1122630.

It is an arithmetic number, because the mean of its divisors is an integer number (5750160).

Almost surely, 2^216649062 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216649062, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276007680).

216649062 is an abundant number, since it is smaller than the sum of its proper divisors (335366298).

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

216649062 is a wasteful number, since it uses less digits than its factorization.

216649062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 216649062 is about 14719.0034309392. The cubic root of 216649062 is about 600.6003823680.

The spelling of 216649062 in words is "two hundred sixteen million, six hundred forty-nine thousand, sixty-two".