64865073 has 48 divisors (see below), whose sum is σ = 109507200. Its totient is φ = 34122816.

The previous prime is 64865071. The next prime is 64865089. The reversal of 64865073 is 37056846.

It is not a de Polignac number, because 64865073 - 2¹ = 64865071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64865071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 173715 + ... + 174087.

It is an arithmetic number, because the mean of its divisors is an integer number (2281400).

Almost surely, 2^64865073 is an apocalyptic number.

It is an amenable number.

64865073 is a deficient number, since it is larger than the sum of its proper divisors (44642127).

64865073 is a wasteful number, since it uses less digits than its factorization.

64865073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 64865073 is about 8053.8855839899. The cubic root of 64865073 is about 401.7941757180.

The spelling of 64865073 in words is "sixty-four million, eight hundred sixty-five thousand, seventy-three".