80730647 has 4 divisors (see below), whose sum is σ = 80751216. Its totient is φ = 80710080.

The previous prime is 80730619. The next prime is 80730659. The reversal of 80730647 is 74603708.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80730647 - 2¹² = 80726551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80730047) 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, 2363 + ... + 12924.

It is an arithmetic number, because the mean of its divisors is an integer number (20187804).

Almost surely, 2^80730647 is an apocalyptic number.

80730647 is a deficient number, since it is larger than the sum of its proper divisors (20569).

80730647 is a wasteful number, since it uses less digits than its factorization.

80730647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20568.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 80730647 is about 8985.0234835531. The cubic root of 80730647 is about 432.1947406607.

The spelling of 80730647 in words is "eighty million, seven hundred thirty thousand, six hundred forty-seven".