86026721 has 4 divisors (see below), whose sum is σ = 93847344. Its totient is φ = 78206100.

The previous prime is 86026711. The next prime is 86026723. The reversal of 86026721 is 12762068.

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 86026721 - 2⁶ = 86026657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86026723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3910295 + ... + 3910316.

It is an arithmetic number, because the mean of its divisors is an integer number (23461836).

Almost surely, 2^86026721 is an apocalyptic number.

It is an amenable number.

86026721 is a deficient number, since it is larger than the sum of its proper divisors (7820623).

86026721 is a wasteful number, since it uses less digits than its factorization.

86026721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7820622.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 86026721 is about 9275.0590833698. The cubic root of 86026721 is about 441.4462072570.

Adding to 86026721 its reverse (12762068), we get a palindrome (98788789).

The spelling of 86026721 in words is "eighty-six million, twenty-six thousand, seven hundred twenty-one".