211050664 has 64 divisors (see below), whose sum is σ = 452096640. Its totient is φ = 91503360.

The previous prime is 211050659. The next prime is 211050673. The reversal of 211050664 is 466050112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171957 + ... + 173179.

It is an arithmetic number, because the mean of its divisors is an integer number (7064010).

Almost surely, 2^211050664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211050664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226048320).

211050664 is an abundant number, since it is smaller than the sum of its proper divisors (241045976).

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

211050664 is a wasteful number, since it uses less digits than its factorization.

211050664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330 (or 1326 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 211050664 is about 14527.5828684609. The cubic root of 211050664 is about 595.3818268071.

The spelling of 211050664 in words is "two hundred eleven million, fifty thousand, six hundred sixty-four".