86836644 has 24 divisors (see below), whose sum is σ = 225132320. Its totient is φ = 28945512.

The previous prime is 86836637. The next prime is 86836649. The reversal of 86836644 is 44663868.

It is a self number, because there is not a number n which added to its sum of digits gives 86836644.

It is not an unprimeable number, because it can be changed into a prime (86836649) 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 7 ways as a sum of consecutive naturals, for example, 401914 + ... + 402129.

Almost surely, 2^86836644 is an apocalyptic number.

It is an amenable number.

86836644 is an abundant number, since it is smaller than the sum of its proper divisors (138295676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86836644 is a wasteful number, since it uses less digits than its factorization.

86836644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804056 (or 804048 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 86836644 is about 9318.6181379001. The cubic root of 86836644 is about 442.8272557602.

The spelling of 86836644 in words is "eighty-six million, eight hundred thirty-six thousand, six hundred forty-four".