64044245 has 8 divisors (see below), whose sum is σ = 76896600. Its totient is φ = 51206400.

The previous prime is 64044241. The next prime is 64044251. The reversal of 64044245 is 54244046.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1965604 + 62078641 = 1402^2 + 7879^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64044245 - 2² = 64044241 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64044241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13145 + ... + 17345.

It is an arithmetic number, because the mean of its divisors is an integer number (9612075).

Almost surely, 2^64044245 is an apocalyptic number.

It is an amenable number.

64044245 is a deficient number, since it is larger than the sum of its proper divisors (12852355).

64044245 is a wasteful number, since it uses less digits than its factorization.

64044245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7255.

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 64044245 is about 8002.7648347306. The cubic root of 64044245 is about 400.0921558500.

The spelling of 64044245 in words is "sixty-four million, forty-four thousand, two hundred forty-five".