729799545 has 32 divisors (see below), whose sum is σ = 1290131712. Its totient is φ = 350400512.

The previous prime is 729799541. The next prime is 729799561. The reversal of 729799545 is 545997927.

It is a cyclic number.

It is not a de Polignac number, because 729799545 - 2² = 729799541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (729799541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56352 + ... + 68081.

It is an arithmetic number, because the mean of its divisors is an integer number (40316616).

Almost surely, 2^729799545 is an apocalyptic number.

It is an amenable number.

729799545 is a deficient number, since it is larger than the sum of its proper divisors (560332167).

729799545 is a wasteful number, since it uses less digits than its factorization.

729799545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124481.

The product of its digits is 7144200, while the sum is 57.

The square root of 729799545 is about 27014.8023313146. The cubic root of 729799545 is about 900.3289106471.

The spelling of 729799545 in words is "seven hundred twenty-nine million, seven hundred ninety-nine thousand, five hundred forty-five".