64729441 has 12 divisors (see below), whose sum is σ = 75440640. Its totient is φ = 55377000.

The previous prime is 64729439. The next prime is 64729463. The reversal of 64729441 is 14492746.

It is a happy number.

64729441 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 64729441 - 2¹ = 64729439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64729441.

It is not an unprimeable number, because it can be changed into a prime (64729411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35920 + ... + 37678.

It is an arithmetic number, because the mean of its divisors is an integer number (6286720).

Almost surely, 2^64729441 is an apocalyptic number.

It is an amenable number.

64729441 is a deficient number, since it is larger than the sum of its proper divisors (10711199).

64729441 is a wasteful number, since it uses less digits than its factorization.

64729441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524 (or 2517 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 64729441 is about 8045.4608941937. The cubic root of 64729441 is about 401.5139315492.

The spelling of 64729441 in words is "sixty-four million, seven hundred twenty-nine thousand, four hundred forty-one".