84365221 has 8 divisors (see below), whose sum is σ = 85953600. Its totient is φ = 82782240.

The previous prime is 84365207. The next prime is 84365243. The reversal of 84365221 is 12256348.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84365221 - 2⁵ = 84365189 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 (84365201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43960 + ... + 45838.

It is an arithmetic number, because the mean of its divisors is an integer number (10744200).

Almost surely, 2^84365221 is an apocalyptic number.

It is an amenable number.

84365221 is a deficient number, since it is larger than the sum of its proper divisors (1588379).

84365221 is a wasteful number, since it uses less digits than its factorization.

84365221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699.

The product of its digits is 11520, while the sum is 31.

The square root of 84365221 is about 9185.0542186750. The cubic root of 84365221 is about 438.5857155028.

The spelling of 84365221 in words is "eighty-four million, three hundred sixty-five thousand, two hundred twenty-one".