768729 has 16 divisors (see below), whose sum is σ = 1153152. Its totient is φ = 451968.

The previous prime is 768727. The next prime is 768751. The reversal of 768729 is 927867.

It is not a de Polignac number, because 768729 - 2¹ = 768727 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (768727) 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 15 ways as a sum of consecutive naturals, for example, 469 + ... + 1325.

It is an arithmetic number, because the mean of its divisors is an integer number (72072).

2⁷⁶⁸⁷²⁹ is an apocalyptic number.

It is an amenable number.

768729 is a deficient number, since it is larger than the sum of its proper divisors (384423).

768729 is a wasteful number, since it uses less digits than its factorization.

768729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896.

The product of its digits is 42336, while the sum is 39.

The square root of 768729 is about 876.7719201708. The cubic root of 768729 is about 91.6061058203.

The spelling of 768729 in words is "seven hundred sixty-eight thousand, seven hundred twenty-nine".