83642321 has 16 divisors (see below), whose sum is σ = 98195328. Its totient is φ = 69763200.

The previous prime is 83642297. The next prime is 83642347. The reversal of 83642321 is 12324638.

It is a cyclic number.

It is not a de Polignac number, because 83642321 - 2¹⁰ = 83641297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83642521) 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, 47741 + ... + 49461.

It is an arithmetic number, because the mean of its divisors is an integer number (6137208).

Almost surely, 2^83642321 is an apocalyptic number.

It is an amenable number.

83642321 is a deficient number, since it is larger than the sum of its proper divisors (14553007).

83642321 is a wasteful number, since it uses less digits than its factorization.

83642321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912.

The product of its digits is 6912, while the sum is 29.

The square root of 83642321 is about 9145.6175843953. The cubic root of 83642321 is about 437.3294176887.

Adding to 83642321 its reverse (12324638), we get a palindrome (95966959).

The spelling of 83642321 in words is "eighty-three million, six hundred forty-two thousand, three hundred twenty-one".