729774 has 12 divisors (see below), whose sum is σ = 1581216. Its totient is φ = 243252.

The previous prime is 729761. The next prime is 729779. The reversal of 729774 is 477927.

729774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729779) by changing a digit.

729774 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20254 + ... + 20289.

It is an arithmetic number, because the mean of its divisors is an integer number (131768).

2⁷²⁹⁷⁷⁴ is an apocalyptic number.

729774 is an abundant number, since it is smaller than the sum of its proper divisors (851442).

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

729774 is a wasteful number, since it uses less digits than its factorization.

729774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40551 (or 40548 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 729774 is about 854.2681077975. The cubic root of 729774 is about 90.0318405858.

Subtracting from 729774 its product of digits (24696), we obtain a triangular number (705078 = T₁₁₈₇).

The spelling of 729774 in words is "seven hundred twenty-nine thousand, seven hundred seventy-four".