64578945 has 16 divisors (see below), whose sum is σ = 104636160. Its totient is φ = 34005504.

The previous prime is 64578901. The next prime is 64578953. The reversal of 64578945 is 54987546.

64578945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64578945 - 2⁶ = 64578881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64578894 and 64578903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26064 + ... + 28433.

It is an arithmetic number, because the mean of its divisors is an integer number (6539760).

Almost surely, 2^64578945 is an apocalyptic number.

It is an amenable number.

64578945 is a deficient number, since it is larger than the sum of its proper divisors (40057215).

64578945 is a wasteful number, since it uses less digits than its factorization.

64578945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54584.

The product of its digits is 1209600, while the sum is 48.

The square root of 64578945 is about 8036.1026001414. The cubic root of 64578945 is about 401.2025166781.

The spelling of 64578945 in words is "sixty-four million, five hundred seventy-eight thousand, nine hundred forty-five".