80803636 has 12 divisors (see below), whose sum is σ = 142807140. Its totient is φ = 40001600.

The previous prime is 80803631. The next prime is 80803663. The reversal of 80803636 is 63630808.

It can be written as a sum of positive squares in 2 ways, for example, as 42981136 + 37822500 = 6556^2 + 6150^2 .

80803636 is a modest number, since divided by 3636 gives 808 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80803631) 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, 99601 + ... + 100408.

It is an arithmetic number, because the mean of its divisors is an integer number (11900595).

Almost surely, 2^80803636 is an apocalyptic number.

It is an amenable number.

80803636 is a deficient number, since it is larger than the sum of its proper divisors (62003504).

80803636 is a wasteful number, since it uses less digits than its factorization.

80803636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200114 (or 200112 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 80803636 is about 8989.0842692679. The cubic root of 80803636 is about 432.3249512687.

The spelling of 80803636 in words is "eighty million, eight hundred three thousand, six hundred thirty-six".