801732666 has 64 divisors (see below), whose sum is σ = 1978214400. Its totient is φ = 211544256.

The previous prime is 801732641. The next prime is 801732713. The reversal of 801732666 is 666237108.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13705 + ... + 42323.

It is an arithmetic number, because the mean of its divisors is an integer number (30909600).

Almost surely, 2^801732666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 801732666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989107200).

801732666 is an abundant number, since it is smaller than the sum of its proper divisors (1176481734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

801732666 is a wasteful number, since it uses less digits than its factorization.

801732666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28683.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 801732666 is about 28314.8841777606. The cubic root of 801732666 is about 928.9874770580.

The spelling of 801732666 in words is "eight hundred one million, seven hundred thirty-two thousand, six hundred sixty-six".