664241214 has 32 divisors (see below), whose sum is σ = 1635056640. Its totient is φ = 175184352.

The previous prime is 664241213. The next prime is 664241267. The reversal of 664241214 is 412142466.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664241213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607734 + ... + 608825.

It is an arithmetic number, because the mean of its divisors is an integer number (51095520).

Almost surely, 2^664241214 is an apocalyptic number.

664241214 is an abundant number, since it is smaller than the sum of its proper divisors (970815426).

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

664241214 is a wasteful number, since it uses less digits than its factorization.

664241214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216584.

The product of its digits is 9216, while the sum is 30.

The square root of 664241214 is about 25772.8774877777. The cubic root of 664241214 is about 872.5197633200.

The spelling of 664241214 in words is "six hundred sixty-four million, two hundred forty-one thousand, two hundred fourteen".