756729 has 8 divisors (see below), whose sum is σ = 1121120. Its totient is φ = 504468.

The previous prime is 756727. The next prime is 756739. The reversal of 756729 is 927657.

It is not a de Polignac number, because 756729 - 2¹ = 756727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 756693 and 756702.

It is not an unprimeable number, because it can be changed into a prime (756727) 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 7 ways as a sum of consecutive naturals, for example, 13987 + ... + 14040.

It is an arithmetic number, because the mean of its divisors is an integer number (140140).

2⁷⁵⁶⁷²⁹ is an apocalyptic number.

It is an amenable number.

756729 is a deficient number, since it is larger than the sum of its proper divisors (364391).

756729 is a wasteful number, since it uses less digits than its factorization.

756729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28036 (or 28030 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 756729 is about 869.9017185866. The cubic root of 756729 is about 91.1269411431.

It can be divided in two parts, 756 and 729, that added together give a triangular number (1485 = T₅₄).

The spelling of 756729 in words is "seven hundred fifty-six thousand, seven hundred twenty-nine".