65675945 has 4 divisors (see below), whose sum is σ = 78811140. Its totient is φ = 52540752.

The previous prime is 65675917. The next prime is 65675959. The reversal of 65675945 is 54957656.

It is a happy number.

65675945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 28270489 + 37405456 = 5317^2 + 6116^2 .

It is a cyclic number.

It is not a de Polignac number, because 65675945 - 2⁶ = 65675881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65675945.

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 3 ways as a sum of consecutive naturals, for example, 6567590 + ... + 6567599.

It is an arithmetic number, because the mean of its divisors is an integer number (19702785).

Almost surely, 2^65675945 is an apocalyptic number.

It is an amenable number.

65675945 is a deficient number, since it is larger than the sum of its proper divisors (13135195).

65675945 is a wasteful number, since it uses less digits than its factorization.

65675945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13135194.

The product of its digits is 1134000, while the sum is 47.

The square root of 65675945 is about 8104.0696566602. The cubic root of 65675945 is about 403.4615105370.

The spelling of 65675945 in words is "sixty-five million, six hundred seventy-five thousand, nine hundred forty-five".