86206421 has 8 divisors (see below), whose sum is σ = 99992640. Its totient is φ = 72787968.

The previous prime is 86206409. The next prime is 86206441. The reversal of 86206421 is 12460268.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86206421 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 (86206441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91436 + ... + 92373.

It is an arithmetic number, because the mean of its divisors is an integer number (12499080).

Almost surely, 2^86206421 is an apocalyptic number.

It is an amenable number.

86206421 is a deficient number, since it is larger than the sum of its proper divisors (13786219).

86206421 is a wasteful number, since it uses less digits than its factorization.

86206421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183883.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 86206421 is about 9284.7412995732. The cubic root of 86206421 is about 441.7533703915.

Adding to 86206421 its reverse (12460268), we get a palindrome (98666689).

The spelling of 86206421 in words is "eighty-six million, two hundred six thousand, four hundred twenty-one".