80665798 has 8 divisors (see below), whose sum is σ = 122703120. Its totient is φ = 39764760.

The previous prime is 80665723. The next prime is 80665817. The reversal of 80665798 is 89756608.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283893 + ... + 284176.

It is an arithmetic number, because the mean of its divisors is an integer number (15337890).

Almost surely, 2^80665798 is an apocalyptic number.

80665798 is a deficient number, since it is larger than the sum of its proper divisors (42037322).

80665798 is a wasteful number, since it uses less digits than its factorization.

80665798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568142.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 80665798 is about 8981.4140312091. The cubic root of 80665798 is about 432.0789857576.

The spelling of 80665798 in words is "eighty million, six hundred sixty-five thousand, seven hundred ninety-eight".