221684514 has 32 divisors (see below), whose sum is σ = 468504000. Its totient is φ = 69735744.

The previous prime is 221684513. The next prime is 221684543. The reversal of 221684514 is 415486122.

It is a happy number.

221684514 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221684513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27052 + ... + 34280.

It is an arithmetic number, because the mean of its divisors is an integer number (14640750).

Almost surely, 2^221684514 is an apocalyptic number.

221684514 is an abundant number, since it is smaller than the sum of its proper divisors (246819486).

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

221684514 is a wasteful number, since it uses less digits than its factorization.

221684514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7522.

The product of its digits is 15360, while the sum is 33.

The square root of 221684514 is about 14889.0736447907. The cubic root of 221684514 is about 605.2179293668.

The spelling of 221684514 in words is "two hundred twenty-one million, six hundred eighty-four thousand, five hundred fourteen".