216610700 has 72 divisors (see below), whose sum is σ = 481292112. Its totient is φ = 84602880.

The previous prime is 216610663. The next prime is 216610763. The reversal of 216610700 is 7016612.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1328819 + ... + 1328981.

Almost surely, 2^216610700 is an apocalyptic number.

216610700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216610700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240646056).

216610700 is an abundant number, since it is smaller than the sum of its proper divisors (264681412).

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

216610700 is a wasteful number, since it uses less digits than its factorization.

216610700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 216610700 is about 14717.7002279568. The cubic root of 216610700 is about 600.5649308845.

The spelling of 216610700 in words is "two hundred sixteen million, six hundred ten thousand, seven hundred".