83720159 has 8 divisors (see below), whose sum is σ = 86097360. Its totient is φ = 81349056.

The previous prime is 83720089. The next prime is 83720167. The reversal of 83720159 is 95102738.

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 83720159 - 2²⁰ = 82671583 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 (83720179) 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, 52232 + ... + 53810.

It is an arithmetic number, because the mean of its divisors is an integer number (10762170).

Almost surely, 2^83720159 is an apocalyptic number.

83720159 is a deficient number, since it is larger than the sum of its proper divisors (2377201).

83720159 is a wasteful number, since it uses less digits than its factorization.

83720159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 83720159 is about 9149.8720756085. The cubic root of 83720159 is about 437.4650360086.

The spelling of 83720159 in words is "eighty-three million, seven hundred twenty thousand, one hundred fifty-nine".