345573729 has 32 divisors (see below), whose sum is σ = 545792000. Its totient is φ = 215469072.

The previous prime is 345573721. The next prime is 345573733. The reversal of 345573729 is 927375543.

345573729 is a `hidden beast` number, since 3 + 4 + 5 + 573 + 72 + 9 = 666.

It is not a de Polignac number, because 345573729 - 2³ = 345573721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345573721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36264 + ... + 44790.

It is an arithmetic number, because the mean of its divisors is an integer number (17056000).

Almost surely, 2^345573729 is an apocalyptic number.

It is an amenable number.

345573729 is a deficient number, since it is larger than the sum of its proper divisors (200218271).

345573729 is a wasteful number, since it uses less digits than its factorization.

345573729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8634 (or 8628 counting only the distinct ones).

The product of its digits is 793800, while the sum is 45.

The square root of 345573729 is about 18589.6134709681. The cubic root of 345573729 is about 701.7464750376.

The spelling of 345573729 in words is "three hundred forty-five million, five hundred seventy-three thousand, seven hundred twenty-nine".