84067321 has 4 divisors (see below), whose sum is σ = 90534052. Its totient is φ = 77600592.

The previous prime is 84067301. The next prime is 84067327. The reversal of 84067321 is 12376048.

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 4161600 + 79905721 = 2040^2 + 8939^2 .

It is a cyclic number.

It is not a de Polignac number, because 84067321 - 2⁵ = 84067289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84067327) 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 3 ways as a sum of consecutive naturals, for example, 3233346 + ... + 3233371.

It is an arithmetic number, because the mean of its divisors is an integer number (22633513).

Almost surely, 2^84067321 is an apocalyptic number.

It is an amenable number.

84067321 is a deficient number, since it is larger than the sum of its proper divisors (6466731).

84067321 is a wasteful number, since it uses less digits than its factorization.

84067321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6466730.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 84067321 is about 9168.8233159986. The cubic root of 84067321 is about 438.0688802107.

The spelling of 84067321 in words is "eighty-four million, sixty-seven thousand, three hundred twenty-one".