80644853 has 16 divisors (see below), whose sum is σ = 86313600. Its totient is φ = 75216960.

The previous prime is 80644843. The next prime is 80644871. The reversal of 80644853 is 35844608.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 80644853 - 2⁶ = 80644789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80644813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108758 + ... + 109496.

It is an arithmetic number, because the mean of its divisors is an integer number (5394600).

Almost surely, 2^80644853 is an apocalyptic number.

It is an amenable number.

80644853 is a deficient number, since it is larger than the sum of its proper divisors (5668747).

80644853 is a wasteful number, since it uses less digits than its factorization.

80644853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 80644853 is about 8980.2479364436. The cubic root of 80644853 is about 432.0415858601.

The spelling of 80644853 in words is "eighty million, six hundred forty-four thousand, eight hundred fifty-three".