86571223 has 4 divisors (see below), whose sum is σ = 87790608. Its totient is φ = 85351840.

The previous prime is 86571203. The next prime is 86571253. The reversal of 86571223 is 32217568.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86571223 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 (86571203) 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, 609586 + ... + 609727.

It is an arithmetic number, because the mean of its divisors is an integer number (21947652).

Almost surely, 2^86571223 is an apocalyptic number.

86571223 is a deficient number, since it is larger than the sum of its proper divisors (1219385).

86571223 is a wasteful number, since it uses less digits than its factorization.

86571223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219384.

The product of its digits is 20160, while the sum is 34.

The square root of 86571223 is about 9304.3658032130. The cubic root of 86571223 is about 442.3756199729.

The spelling of 86571223 in words is "eighty-six million, five hundred seventy-one thousand, two hundred twenty-three".