64808145 has 48 divisors (see below), whose sum is σ = 119121600. Its totient is φ = 32503680.

The previous prime is 64808141. The next prime is 64808147. The reversal of 64808145 is 54180846.

64808145 is a `hidden beast` number, since 648 + 0 + 8 + 1 + 4 + 5 = 666.

It is not a de Polignac number, because 64808145 - 2² = 64808141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64808141) 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, 195630 + ... + 195960.

It is an arithmetic number, because the mean of its divisors is an integer number (2481700).

Almost surely, 2^64808145 is an apocalyptic number.

It is an amenable number.

64808145 is a deficient number, since it is larger than the sum of its proper divisors (54313455).

64808145 is a wasteful number, since it uses less digits than its factorization.

64808145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 64808145 is about 8050.3506134826. The cubic root of 64808145 is about 401.6765981448.

The spelling of 64808145 in words is "sixty-four million, eight hundred eight thousand, one hundred forty-five".