614238221 has 4 divisors (see below), whose sum is σ = 630839292. Its totient is φ = 597637152.

The previous prime is 614238197. The next prime is 614238269. The reversal of 614238221 is 122832416.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 570493225 + 43744996 = 23885^2 + 6614^2 .

It is a cyclic number.

It is not a de Polignac number, because 614238221 - 2²⁶ = 547129357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (614234221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8300480 + ... + 8300553.

It is an arithmetic number, because the mean of its divisors is an integer number (157709823).

Almost surely, 2^614238221 is an apocalyptic number.

It is an amenable number.

614238221 is a deficient number, since it is larger than the sum of its proper divisors (16601071).

614238221 is a wasteful number, since it uses less digits than its factorization.

614238221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16601070.

The product of its digits is 4608, while the sum is 29.

The square root of 614238221 is about 24783.8298291446. The cubic root of 614238221 is about 850.0522325457.

The spelling of 614238221 in words is "six hundred fourteen million, two hundred thirty-eight thousand, two hundred twenty-one".