730566 has 32 divisors (see below), whose sum is σ = 1653120. Its totient is φ = 239112.

The previous prime is 730559. The next prime is 730567. The reversal of 730566 is 665037.

730566 = T₈₉ + T₉₀ + ... + T₁₇₁.

730566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 730566.

It is not an unprimeable number, because it can be changed into a prime (730567) by changing a digit.

730566 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 15 ways as a sum of consecutive naturals, for example, 4401 + ... + 4563.

It is an arithmetic number, because the mean of its divisors is an integer number (51660).

2⁷³⁰⁵⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 730566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (826560).

730566 is an abundant number, since it is smaller than the sum of its proper divisors (922554).

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

730566 is a wasteful number, since it uses less digits than its factorization.

730566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 730566 is about 854.7315367997. The cubic root of 730566 is about 90.0643983540.

It can be divided in two parts, 730 and 566, that added together give a 4-th power (1296 = 6⁴).

The spelling of 730566 in words is "seven hundred thirty thousand, five hundred sixty-six".