80781608 has 16 divisors (see below), whose sum is σ = 153384000. Its totient is φ = 39879216.

The previous prime is 80781607. The next prime is 80781641. The reversal of 80781608 is 80618708.

It is not an unprimeable number, because it can be changed into a prime (80781601) 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, 63278 + ... + 64541.

It is an arithmetic number, because the mean of its divisors is an integer number (9586500).

Almost surely, 2^80781608 is an apocalyptic number.

It is an amenable number.

80781608 is a deficient number, since it is larger than the sum of its proper divisors (72602392).

80781608 is a wasteful number, since it uses less digits than its factorization.

80781608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127904 (or 127900 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 80781608 is about 8987.8589219013. The cubic root of 80781608 is about 432.2856621146.

The spelling of 80781608 in words is "eighty million, seven hundred eighty-one thousand, six hundred eight".