64045729 has 8 divisors (see below), whose sum is σ = 70092288. Its totient is φ = 58036560.

The previous prime is 64045711. The next prime is 64045733. The reversal of 64045729 is 92754046.

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 64045729 - 2⁵ = 64045697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64045759) 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 7 ways as a sum of consecutive naturals, for example, 5697 + ... + 12670.

It is an arithmetic number, because the mean of its divisors is an integer number (8761536).

Almost surely, 2^64045729 is an apocalyptic number.

It is an amenable number.

64045729 is a deficient number, since it is larger than the sum of its proper divisors (6046559).

64045729 is a wasteful number, since it uses less digits than its factorization.

64045729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18695.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 64045729 is about 8002.8575521497. The cubic root of 64045729 is about 400.0952460687.

The spelling of 64045729 in words is "sixty-four million, forty-five thousand, seven hundred twenty-nine".