80487813 has 16 divisors (see below), whose sum is σ = 123109376. Its totient is φ = 45820080.

The previous prime is 80487779. The next prime is 80487817. The reversal of 80487813 is 31878408.

It is not a de Polignac number, because 80487813 - 2¹² = 80483717 is a prime.

It is the 8972-nd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80487817) by changing a digit.

It is a nontrivial repunit in base 8971.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1381 + ... + 12762.

It is an arithmetic number, because the mean of its divisors is an integer number (7694336).

Almost surely, 2^80487813 is an apocalyptic number.

It is an amenable number.

80487813 is a deficient number, since it is larger than the sum of its proper divisors (42621563).

80487813 is a wasteful number, since it uses less digits than its factorization.

80487813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14424.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 80487813 is about 8971.5000417990. The cubic root of 80487813 is about 431.7609649404.

The spelling of 80487813 in words is "eighty million, four hundred eighty-seven thousand, eight hundred thirteen".