86836643 has 4 divisors (see below), whose sum is σ = 89831040. Its totient is φ = 83842248.

The previous prime is 86836637. The next prime is 86836649. The reversal of 86836643 is 34663868.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (86836637) and next prime (86836649).

It is not a de Polignac number, because 86836643 - 2¹⁴ = 86820259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86836594 and 86836603.

It is not an unprimeable number, because it can be changed into a prime (86836649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1497155 + ... + 1497212.

It is an arithmetic number, because the mean of its divisors is an integer number (22457760).

Almost surely, 2^86836643 is an apocalyptic number.

86836643 is a deficient number, since it is larger than the sum of its proper divisors (2994397).

86836643 is a wasteful number, since it uses less digits than its factorization.

86836643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2994396.

The product of its digits is 497664, while the sum is 44.

The square root of 86836643 is about 9318.6180842440. The cubic root of 86836643 is about 442.8272540603.

The spelling of 86836643 in words is "eighty-six million, eight hundred thirty-six thousand, six hundred forty-three".