80722447 has 4 divisors (see below), whose sum is σ = 86931880. Its totient is φ = 74513016.

The previous prime is 80722441. The next prime is 80722463. The reversal of 80722447 is 74422708.

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 80722447 - 2¹¹ = 80720399 is a prime.

It is a super-2 number, since 2×80722447² = 13032226899335618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80722441) 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, 3104697 + ... + 3104722.

It is an arithmetic number, because the mean of its divisors is an integer number (21732970).

Almost surely, 2^80722447 is an apocalyptic number.

80722447 is a deficient number, since it is larger than the sum of its proper divisors (6209433).

80722447 is a wasteful number, since it uses less digits than its factorization.

80722447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6209432.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 80722447 is about 8984.5671570755. The cubic root of 80722447 is about 432.1801071562.

The spelling of 80722447 in words is "eighty million, seven hundred twenty-two thousand, four hundred forty-seven".