80704645 has 16 divisors (see below), whose sum is σ = 111495168. Its totient is φ = 54933120.

The previous prime is 80704633. The next prime is 80704669. The reversal of 80704645 is 54640708.

It is not a de Polignac number, because 80704645 - 2¹³ = 80696453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80704645.

It is a congruent number.

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, 3621 + ... + 13210.

It is an arithmetic number, because the mean of its divisors is an integer number (6968448).

Almost surely, 2^80704645 is an apocalyptic number.

It is an amenable number.

80704645 is a deficient number, since it is larger than the sum of its proper divisors (30790523).

80704645 is a wasteful number, since it uses less digits than its factorization.

80704645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16980.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 80704645 is about 8983.5764036379. The cubic root of 80704645 is about 432.1483347633.

The spelling of 80704645 in words is "eighty million, seven hundred four thousand, six hundred forty-five".