80860705 has 4 divisors (see below), whose sum is σ = 97032852. Its totient is φ = 64688560.

The previous prime is 80860691. The next prime is 80860711. The reversal of 80860705 is 50706808.

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 12103441 + 68757264 = 3479^2 + 8292^2 .

It is not a de Polignac number, because 80860705 - 2⁵ = 80860673 is a prime.

It is a super-2 number, since 2×80860705² = 13076907226194050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8086066 + ... + 8086075.

It is an arithmetic number, because the mean of its divisors is an integer number (24258213).

Almost surely, 2^80860705 is an apocalyptic number.

It is an amenable number.

80860705 is a deficient number, since it is larger than the sum of its proper divisors (16172147).

80860705 is a wasteful number, since it uses less digits than its factorization.

80860705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16172146.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 80860705 is about 8992.2580590194. The cubic root of 80860705 is about 432.4267063700.

The spelling of 80860705 in words is "eighty million, eight hundred sixty thousand, seven hundred five".