80640104 has 16 divisors (see below), whose sum is σ = 159158400. Its totient is φ = 38197872.

The previous prime is 80640103. The next prime is 80640113. The reversal of 80640104 is 40104608.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 80640104.

It is not an unprimeable number, because it can be changed into a prime (80640101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265112 + ... + 265415.

It is an arithmetic number, because the mean of its divisors is an integer number (9947400).

Almost surely, 2^80640104 is an apocalyptic number.

It is an amenable number.

80640104 is a deficient number, since it is larger than the sum of its proper divisors (78518296).

80640104 is a wasteful number, since it uses less digits than its factorization.

80640104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530552 (or 530548 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 80640104 is about 8979.9835189158. The cubic root of 80640104 is about 432.0331050305.

It can be divided in two parts, 80640 and 104, that multiplied together give a triangular number (8386560 = T₄₀₉₅).

The spelling of 80640104 in words is "eighty million, six hundred forty thousand, one hundred four".