80710705 has 4 divisors (see below), whose sum is σ = 96852852. Its totient is φ = 64568560.

The previous prime is 80710691. The next prime is 80710711. The reversal of 80710705 is 50701708.

It is a happy number.

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 25847056 + 54863649 = 5084^2 + 7407^2 .

It is not a de Polignac number, because 80710705 - 2⁹ = 80710193 is a prime.

It is a Duffinian 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, 8071066 + ... + 8071075.

It is an arithmetic number, because the mean of its divisors is an integer number (24213213).

Almost surely, 2^80710705 is an apocalyptic number.

It is an amenable number.

80710705 is a deficient number, since it is larger than the sum of its proper divisors (16142147).

80710705 is a wasteful number, since it uses less digits than its factorization.

80710705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16142146.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 80710705 is about 8983.9136794606. The cubic root of 80710705 is about 432.1591509658.

The spelling of 80710705 in words is "eighty million, seven hundred ten thousand, seven hundred five".