80647305 has 16 divisors (see below), whose sum is σ = 135827520. Its totient is φ = 40747968.

The previous prime is 80647279. The next prime is 80647313. The reversal of 80647305 is 50374608.

It is not a de Polignac number, because 80647305 - 2¹² = 80643209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141202 + ... + 141771.

It is an arithmetic number, because the mean of its divisors is an integer number (8489220).

Almost surely, 2^80647305 is an apocalyptic number.

It is an amenable number.

80647305 is a deficient number, since it is larger than the sum of its proper divisors (55180215).

80647305 is a wasteful number, since it uses less digits than its factorization.

80647305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283000.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 80647305 is about 8980.3844572490. The cubic root of 80647305 is about 432.0459645451.

The spelling of 80647305 in words is "eighty million, six hundred forty-seven thousand, three hundred five".