80644036 has 12 divisors (see below), whose sum is σ = 153956880. Its totient is φ = 36656360.

The previous prime is 80644033. The next prime is 80644061. The reversal of 80644036 is 63044608.

It is a junction number, because it is equal to n+sod(n) for n = 80643989 and 80644007.

It is not an unprimeable number, because it can be changed into a prime (80644033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916366 + ... + 916453.

It is an arithmetic number, because the mean of its divisors is an integer number (12829740).

Almost surely, 2^80644036 is an apocalyptic number.

It is an amenable number.

80644036 is a deficient number, since it is larger than the sum of its proper divisors (73312844).

80644036 is a wasteful number, since it uses less digits than its factorization.

80644036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832834 (or 1832832 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 80644036 is about 8980.2024476066. The cubic root of 80644036 is about 432.0401268739.

It can be divided in two parts, 8064 and 4036, that added together give a square (12100 = 110²).

The spelling of 80644036 in words is "eighty million, six hundred forty-four thousand, thirty-six".