64724041 has 4 divisors (see below), whose sum is σ = 64750612. Its totient is φ = 64697472.

The previous prime is 64723999. The next prime is 64724053. The reversal of 64724041 is 14042746.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36048016 + 28676025 = 6004^2 + 5355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64724041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64724141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9216 + ... + 14641.

It is an arithmetic number, because the mean of its divisors is an integer number (16187653).

Almost surely, 2^64724041 is an apocalyptic number.

It is an amenable number.

64724041 is a deficient number, since it is larger than the sum of its proper divisors (26571).

64724041 is a wasteful number, since it uses less digits than its factorization.

64724041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26570.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 64724041 is about 8045.1252942387. The cubic root of 64724041 is about 401.5027659163.

Adding to 64724041 its reverse (14042746), we get a palindrome (78766787).

The spelling of 64724041 in words is "sixty-four million, seven hundred twenty-four thousand, forty-one".