83720343 has 16 divisors (see below), whose sum is σ = 127952640. Its totient is φ = 47698176.

The previous prime is 83720323. The next prime is 83720347. The reversal of 83720343 is 34302738.

It is not a de Polignac number, because 83720343 - 2⁵ = 83720311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83720343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83720347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1543 + ... + 13031.

It is an arithmetic number, because the mean of its divisors is an integer number (7997040).

Almost surely, 2^83720343 is an apocalyptic number.

83720343 is a deficient number, since it is larger than the sum of its proper divisors (44232297).

83720343 is a wasteful number, since it uses less digits than its factorization.

83720343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11846.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 83720343 is about 9149.8821303883. The cubic root of 83720343 is about 437.4653564949.

The spelling of 83720343 in words is "eighty-three million, seven hundred twenty thousand, three hundred forty-three".