80830705 has 4 divisors (see below), whose sum is σ = 96996852. Its totient is φ = 64664560.

The previous prime is 80830697. The next prime is 80830709. The reversal of 80830705 is 50703808.

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 56791296 + 24039409 = 7536^2 + 4903^2 .

It is not a de Polignac number, because 80830705 - 2³ = 80830697 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80830709) 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, 8083066 + ... + 8083075.

It is an arithmetic number, because the mean of its divisors is an integer number (24249213).

Almost surely, 2^80830705 is an apocalyptic number.

It is an amenable number.

80830705 is a deficient number, since it is larger than the sum of its proper divisors (16166147).

80830705 is a wasteful number, since it uses less digits than its factorization.

80830705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16166146.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 80830705 is about 8990.5898026770. The cubic root of 80830705 is about 432.3732217763.

It can be divided in two parts, 808 and 30705, that added together give a palindrome (31513).

The spelling of 80830705 in words is "eighty million, eight hundred thirty thousand, seven hundred five".