64045445 has 8 divisors (see below), whose sum is σ = 77416344. Its totient is φ = 50861824.

The previous prime is 64045433. The next prime is 64045451. The reversal of 64045445 is 54454046.

It can be written as a sum of positive squares in 4 ways, for example, as 17355556 + 46689889 = 4166^2 + 6833^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64045445 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 46064 + ... + 47433.

It is an arithmetic number, because the mean of its divisors is an integer number (9677043).

Almost surely, 2^64045445 is an apocalyptic number.

It is an amenable number.

64045445 is a deficient number, since it is larger than the sum of its proper divisors (13370899).

64045445 is a wasteful number, since it uses less digits than its factorization.

64045445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93639.

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 64045445 is about 8002.8398084680. The cubic root of 64045445 is about 400.0946546828.

The spelling of 64045445 in words is "sixty-four million, forty-five thousand, four hundred forty-five".