65888945 has 4 divisors (see below), whose sum is σ = 79066740. Its totient is φ = 52711152.

The previous prime is 65888881. The next prime is 65888983. The reversal of 65888945 is 54988856.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39551521 + 26337424 = 6289^2 + 5132^2 .

It is a cyclic number.

It is not a de Polignac number, because 65888945 - 2⁶ = 65888881 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6588890 + ... + 6588899.

It is an arithmetic number, because the mean of its divisors is an integer number (19766685).

Almost surely, 2^65888945 is an apocalyptic number.

It is an amenable number.

65888945 is a deficient number, since it is larger than the sum of its proper divisors (13177795).

65888945 is a wasteful number, since it uses less digits than its factorization.

65888945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13177794.

The product of its digits is 2764800, while the sum is 53.

The square root of 65888945 is about 8117.2005642340. The cubic root of 65888945 is about 403.8972081881.

The spelling of 65888945 in words is "sixty-five million, eight hundred eighty-eight thousand, nine hundred forty-five".