86723213 has 4 divisors (see below), whose sum is σ = 89520768. Its totient is φ = 83925660.

The previous prime is 86723207. The next prime is 86723237. The reversal of 86723213 is 31232768.

It is a happy number.

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 86723213 - 2⁶ = 86723149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86723213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86723293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1398731 + ... + 1398792.

It is an arithmetic number, because the mean of its divisors is an integer number (22380192).

Almost surely, 2^86723213 is an apocalyptic number.

It is an amenable number.

86723213 is a deficient number, since it is larger than the sum of its proper divisors (2797555).

86723213 is a wasteful number, since it uses less digits than its factorization.

86723213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797554.

The product of its digits is 12096, while the sum is 32.

The square root of 86723213 is about 9312.5298925695. The cubic root of 86723213 is about 442.6343562987.

The spelling of 86723213 in words is "eighty-six million, seven hundred twenty-three thousand, two hundred thirteen".