801969664 has 40 divisors (see below), whose sum is σ = 1610709408. Its totient is φ = 398899200.

The previous prime is 801969661. The next prime is 801969671. The reversal of 801969664 is 466969108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801969661) 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, 96889 + ... + 104839.

Almost surely, 2^801969664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 801969664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (805354704).

801969664 is an abundant number, since it is smaller than the sum of its proper divisors (808739744).

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

801969664 is an equidigital number, since it uses as much as digits as its factorization.

801969664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8166 (or 8150 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 801969664 is about 28319.0689112478. The cubic root of 801969664 is about 929.0790065219.

The spelling of 801969664 in words is "eight hundred one million, nine hundred sixty-nine thousand, six hundred sixty-four".