80770305 has 32 divisors (see below), whose sum is σ = 161123328. Its totient is φ = 33566400.

The previous prime is 80770301. The next prime is 80770321. The reversal of 80770305 is 50307708.

It is not a de Polignac number, because 80770305 - 2² = 80770301 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80770301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33811 + ... + 36120.

It is an arithmetic number, because the mean of its divisors is an integer number (5035104).

Almost surely, 2^80770305 is an apocalyptic number.

It is an amenable number.

80770305 is a deficient number, since it is larger than the sum of its proper divisors (80353023).

80770305 is a wasteful number, since it uses less digits than its factorization.

80770305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69957.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 80770305 is about 8987.2301072132. The cubic root of 80770305 is about 432.2654993041.

The spelling of 80770305 in words is "eighty million, seven hundred seventy thousand, three hundred five".