729601645 has 8 divisors (see below), whose sum is σ = 875897856. Its totient is φ = 583430736.

The previous prime is 729601591. The next prime is 729601661. The reversal of 729601645 is 546106927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 729601645 - 2¹⁵ = 729568877 is a prime.

It is a super-3 number, since 3×729601645³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 729601598 and 729601607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17997 + ... + 42226.

It is an arithmetic number, because the mean of its divisors is an integer number (109487232).

Almost surely, 2^729601645 is an apocalyptic number.

It is an amenable number.

729601645 is a deficient number, since it is larger than the sum of its proper divisors (146296211).

729601645 is a wasteful number, since it uses less digits than its factorization.

729601645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62651.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 729601645 is about 27011.1392762319. The cubic root of 729601645 is about 900.2475224539.

The spelling of 729601645 in words is "seven hundred twenty-nine million, six hundred one thousand, six hundred forty-five".