86235021 has 6 divisors (see below), whose sum is σ = 124561710. Its totient is φ = 57490008.

The previous prime is 86234983. The next prime is 86235041. The reversal of 86235021 is 12053268.

It can be written as a sum of positive squares in only one way, i.e., 58293225 + 27941796 = 7635^2 + 5286^2 .

It is not a de Polignac number, because 86235021 - 2⁶ = 86234957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86235041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4790826 + ... + 4790843.

It is an arithmetic number, because the mean of its divisors is an integer number (20760285).

Almost surely, 2^86235021 is an apocalyptic number.

It is an amenable number.

86235021 is a deficient number, since it is larger than the sum of its proper divisors (38326689).

86235021 is a wasteful number, since it uses less digits than its factorization.

86235021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9581675 (or 9581672 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 86235021 is about 9286.2813332356. The cubic root of 86235021 is about 441.8022172923.

Adding to 86235021 its reverse (12053268), we get a palindrome (98288289).

The spelling of 86235021 in words is "eighty-six million, two hundred thirty-five thousand, twenty-one".