80263765 has 4 divisors (see below), whose sum is σ = 96316524. Its totient is φ = 64211008.

The previous prime is 80263751. The next prime is 80263801. The reversal of 80263765 is 56736208.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10608049 + 69655716 = 3257^2 + 8346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80263765 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 8026372 + ... + 8026381.

It is an arithmetic number, because the mean of its divisors is an integer number (24079131).

Almost surely, 2^80263765 is an apocalyptic number.

It is an amenable number.

80263765 is a deficient number, since it is larger than the sum of its proper divisors (16052759).

80263765 is a wasteful number, since it uses less digits than its factorization.

80263765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16052758.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 80263765 is about 8959.0046880220. The cubic root of 80263765 is about 431.3599722339.

The spelling of 80263765 in words is "eighty million, two hundred sixty-three thousand, seven hundred sixty-five".