83219617 has 4 divisors (see below), whose sum is σ = 89621140. Its totient is φ = 76818096.

The previous prime is 83219603. The next prime is 83219651. The reversal of 83219617 is 71691238.

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 27029601 + 56190016 = 5199^2 + 7496^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83219617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83219687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3200742 + ... + 3200767.

It is an arithmetic number, because the mean of its divisors is an integer number (22405285).

Almost surely, 2^83219617 is an apocalyptic number.

It is an amenable number.

83219617 is a deficient number, since it is larger than the sum of its proper divisors (6401523).

83219617 is a wasteful number, since it uses less digits than its factorization.

83219617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6401522.

The product of its digits is 18144, while the sum is 37.

The square root of 83219617 is about 9122.4786653628. The cubic root of 83219617 is about 436.5914611920.

It can be divided in two parts, 832 and 19617, that added together give a square (20449 = 143²).

The spelling of 83219617 in words is "eighty-three million, two hundred nineteen thousand, six hundred seventeen".