665050212 has 72 divisors (see below), whose sum is σ = 1726524800. Its totient is φ = 215732160.

The previous prime is 665050207. The next prime is 665050231. The reversal of 665050212 is 212050566.

665050212 is a `hidden beast` number, since 6 + 650 + 5 + 0 + 2 + 1 + 2 = 666.

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, 539637 + ... + 540867.

Almost surely, 2^665050212 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 665050212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863262400).

665050212 is an abundant number, since it is smaller than the sum of its proper divisors (1061474588).

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

665050212 is a wasteful number, since it uses less digits than its factorization.

665050212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633 (or 1628 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 665050212 is about 25788.5674669998. The cubic root of 665050212 is about 872.8738417067.

The spelling of 665050212 in words is "six hundred sixty-five million, fifty thousand, two hundred twelve".