83220571 has 6 divisors (see below), whose sum is σ = 96807660. Its totient is φ = 71331876.

The previous prime is 83220569. The next prime is 83220619. The reversal of 83220571 is 17502238.

It is not a de Polignac number, because 83220571 - 2¹ = 83220569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83220521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 849141 + ... + 849238.

It is an arithmetic number, because the mean of its divisors is an integer number (16134610).

Almost surely, 2^83220571 is an apocalyptic number.

83220571 is a deficient number, since it is larger than the sum of its proper divisors (13587089).

83220571 is a wasteful number, since it uses less digits than its factorization.

83220571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698393 (or 1698386 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 83220571 is about 9122.5309536334. The cubic root of 83220571 is about 436.5931294952.

The spelling of 83220571 in words is "eighty-three million, two hundred twenty thousand, five hundred seventy-one".