64450075 has 6 divisors (see below), whose sum is σ = 79918124. Its totient is φ = 51560040.

The previous prime is 64450051. The next prime is 64450097. The reversal of 64450075 is 57005446.

It is a happy number.

It is not a de Polignac number, because 64450075 - 2⁹ = 64449563 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1288977 + ... + 1289026.

Almost surely, 2^64450075 is an apocalyptic number.

64450075 is a deficient number, since it is larger than the sum of its proper divisors (15468049).

64450075 is a wasteful number, since it uses less digits than its factorization.

64450075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578013 (or 2578008 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 64450075 is about 8028.0804056761. The cubic root of 64450075 is about 400.9354667992.

The spelling of 64450075 in words is "sixty-four million, four hundred fifty thousand, seventy-five".