729167573 has 4 divisors (see below), whose sum is σ = 730986348. Its totient is φ = 727348800.

The previous prime is 729167557. The next prime is 729167609. The reversal of 729167573 is 375761927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 375761927 = 1213 ⋅309779.

It can be written as a sum of positive squares in 2 ways, for example, as 438567364 + 290600209 = 20942^2 + 17047^2 .

It is a cyclic number.

It is not a de Polignac number, because 729167573 - 2⁴ = 729167557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729167773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 908786 + ... + 909587.

It is an arithmetic number, because the mean of its divisors is an integer number (182746587).

Almost surely, 2^729167573 is an apocalyptic number.

It is an amenable number.

729167573 is a deficient number, since it is larger than the sum of its proper divisors (1818775).

729167573 is a wasteful number, since it uses less digits than its factorization.

729167573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818774.

The product of its digits is 555660, while the sum is 47.

The square root of 729167573 is about 27003.1030253932. The cubic root of 729167573 is about 900.0689547991.

The spelling of 729167573 in words is "seven hundred twenty-nine million, one hundred sixty-seven thousand, five hundred seventy-three".