80705265 has 8 divisors (see below), whose sum is σ = 129128448. Its totient is φ = 43042800.

The previous prime is 80705263. The next prime is 80705267. The reversal of 80705265 is 56250708.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80705263) and next prime (80705267).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80705265 - 2¹ = 80705263 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (80705263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2690161 + ... + 2690190.

It is an arithmetic number, because the mean of its divisors is an integer number (16141056).

Almost surely, 2^80705265 is an apocalyptic number.

It is an amenable number.

80705265 is a deficient number, since it is larger than the sum of its proper divisors (48423183).

80705265 is a wasteful number, since it uses less digits than its factorization.

80705265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5380359.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 80705265 is about 8983.6109109867. The cubic root of 80705265 is about 432.1494413963.

The spelling of 80705265 in words is "eighty million, seven hundred five thousand, two hundred sixty-five".