64741009 has 8 divisors (see below), whose sum is σ = 68114088. Its totient is φ = 61453440.

The previous prime is 64741007. The next prime is 64741013. The reversal of 64741009 is 90014746.

It can be written as a sum of positive squares in 4 ways, for example, as 8910225 + 55830784 = 2985^2 + 7472^2 .

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 64741009 - 2¹ = 64741007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64741007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19822 + ... + 22855.

It is an arithmetic number, because the mean of its divisors is an integer number (8514261).

Almost surely, 2^64741009 is an apocalyptic number.

It is an amenable number.

64741009 is a deficient number, since it is larger than the sum of its proper divisors (3373079).

64741009 is a wasteful number, since it uses less digits than its factorization.

64741009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42755.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 64741009 is about 8046.1797767636. The cubic root of 64741009 is about 401.5378487262.

The spelling of 64741009 in words is "sixty-four million, seven hundred forty-one thousand, nine".