80663449 has 4 divisors (see below), whose sum is σ = 80683300. Its totient is φ = 80643600.

The previous prime is 80663371. The next prime is 80663477. The reversal of 80663449 is 94436608.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72369049 + 8294400 = 8507^2 + 2880^2 .

It is a cyclic number.

It is not a de Polignac number, because 80663449 - 2⁹ = 80662937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80663489) 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, 1374 + ... + 12775.

It is an arithmetic number, because the mean of its divisors is an integer number (20170825).

Almost surely, 2^80663449 is an apocalyptic number.

It is an amenable number.

80663449 is a deficient number, since it is larger than the sum of its proper divisors (19851).

80663449 is a wasteful number, since it uses less digits than its factorization.

80663449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19850.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 80663449 is about 8981.2832602029. The cubic root of 80663449 is about 432.0747916489.

The spelling of 80663449 in words is "eighty million, six hundred sixty-three thousand, four hundred forty-nine".