80765136 has 30 divisors (see below), whose sum is σ = 226030610. Its totient is φ = 26921664.

The previous prime is 80765131. The next prime is 80765141. The reversal of 80765136 is 63156708.

It is an interprime number because it is at equal distance from previous prime (80765131) and next prime (80765141).

It can be written as a sum of positive squares in only one way, i.e., 45481536 + 35283600 = 6744^2 + 5940^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 80765136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80765131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280291 + ... + 280578.

Almost surely, 2^80765136 is an apocalyptic number.

It is an amenable number.

80765136 is an abundant number, since it is smaller than the sum of its proper divisors (145265474).

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

80765136 is a wasteful number, since it uses less digits than its factorization.

80765136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560883 (or 560874 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 80765136 is about 8986.9425279124. The cubic root of 80765136 is about 432.2562779778.

The spelling of 80765136 in words is "eighty million, seven hundred sixty-five thousand, one hundred thirty-six".