801633729 has 16 divisors (see below), whose sum is σ = 1151652992. Its totient is φ = 493060608.

The previous prime is 801633727. The next prime is 801633737. The reversal of 801633729 is 927336108.

It is not a de Polignac number, because 801633729 - 2¹ = 801633727 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (801633727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97164 + ... + 105090.

It is an arithmetic number, because the mean of its divisors is an integer number (71978312).

Almost surely, 2^801633729 is an apocalyptic number.

It is an amenable number.

801633729 is a deficient number, since it is larger than the sum of its proper divisors (350019263).

801633729 is a wasteful number, since it uses less digits than its factorization.

801633729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10536.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 801633729 is about 28313.1370391908. The cubic root of 801633729 is about 928.9492619027.

The spelling of 801633729 in words is "eight hundred one million, six hundred thirty-three thousand, seven hundred twenty-nine".