84644036 has 12 divisors (see below), whose sum is σ = 148263612. Its totient is φ = 42283008.

The previous prime is 84644023. The next prime is 84644047. The reversal of 84644036 is 63044648.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29052100 + 55591936 = 5390^2 + 7456^2 .

It is a super-2 number, since 2×84644036² = 14329225660738592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84643987 and 84644005.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4565 + ... + 13788.

It is an arithmetic number, because the mean of its divisors is an integer number (12355301).

Almost surely, 2^84644036 is an apocalyptic number.

It is an amenable number.

84644036 is a deficient number, since it is larger than the sum of its proper divisors (63619576).

84644036 is a wasteful number, since it uses less digits than its factorization.

84644036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19510 (or 19508 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 84644036 is about 9200.2193452113. The cubic root of 84644036 is about 439.0683385984.

The spelling of 84644036 in words is "eighty-four million, six hundred forty-four thousand, thirty-six".