64425578 has 16 divisors (see below), whose sum is σ = 111151104. Its totient is φ = 27434160.

The previous prime is 64425541. The next prime is 64425589. The reversal of 64425578 is 87552446.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12458 + ... + 16853.

It is an arithmetic number, because the mean of its divisors is an integer number (6946944).

Almost surely, 2^64425578 is an apocalyptic number.

64425578 is a deficient number, since it is larger than the sum of its proper divisors (46725526).

64425578 is a wasteful number, since it uses less digits than its factorization.

64425578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29477.

The product of its digits is 268800, while the sum is 41.

The square root of 64425578 is about 8026.5545534806. The cubic root of 64425578 is about 400.8846628201.

The spelling of 64425578 in words is "sixty-four million, four hundred twenty-five thousand, five hundred seventy-eight".