80745 has 16 divisors (see below), whose sum is σ = 147840. Its totient is φ = 36864.

The previous prime is 80737. The next prime is 80747. The reversal of 80745 is 54708.

80745 is nontrivially palindromic in base 13.

It is not a de Polignac number, because 80745 - 2³ = 80737 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (80747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280 + ... + 489.

It is an arithmetic number, because the mean of its divisors is an integer number (9240).

2⁸⁰⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

80745 is a deficient number, since it is larger than the sum of its proper divisors (67095).

80745 is a wasteful number, since it uses less digits than its factorization.

80745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 80745 is about 284.1566469397. The cubic root of 80745 is about 43.2220352262. Note that the first 3 decimals are identical.

It can be divided in two parts, 807 and 45, that multiplied together give a triangular number (36315 = T₂₆₉).

The spelling of 80745 in words is "eighty thousand, seven hundred forty-five".