86636445 has 16 divisors (see below), whose sum is σ = 158421120. Its totient is φ = 39605184.

The previous prime is 86636411. The next prime is 86636449. The reversal of 86636445 is 54463668.

It is not a de Polignac number, because 86636445 - 2⁷ = 86636317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86636397 and 86636406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86636449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412450 + ... + 412659.

It is an arithmetic number, because the mean of its divisors is an integer number (9901320).

Almost surely, 2^86636445 is an apocalyptic number.

It is an amenable number.

86636445 is a deficient number, since it is larger than the sum of its proper divisors (71784675).

86636445 is a wasteful number, since it uses less digits than its factorization.

86636445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825124.

The product of its digits is 414720, while the sum is 42.

The square root of 86636445 is about 9307.8700571076. The cubic root of 86636445 is about 442.4866860561.

The spelling of 86636445 in words is "eighty-six million, six hundred thirty-six thousand, four hundred forty-five".