84571613 has 4 divisors (see below), whose sum is σ = 96653280. Its totient is φ = 72489948.

The previous prime is 84571609. The next prime is 84571637. The reversal of 84571613 is 31617548.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84571613 - 2² = 84571609 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 (84571213) 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, 6040823 + ... + 6040836.

It is an arithmetic number, because the mean of its divisors is an integer number (24163320).

Almost surely, 2^84571613 is an apocalyptic number.

It is an amenable number.

84571613 is a deficient number, since it is larger than the sum of its proper divisors (12081667).

84571613 is a wasteful number, since it uses less digits than its factorization.

84571613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12081666.

The product of its digits is 20160, while the sum is 35.

The square root of 84571613 is about 9196.2825641669. The cubic root of 84571613 is about 438.9430778741.

It can be divided in two parts, 84571 and 613, that added together give a cube (85184 = 44³).

The spelling of 84571613 in words is "eighty-four million, five hundred seventy-one thousand, six hundred thirteen".