65805945 has 16 divisors (see below), whose sum is σ = 107075520. Its totient is φ = 34501184.

The previous prime is 65805937. The next prime is 65805983. The reversal of 65805945 is 54950856.

It is a cyclic number.

It is not a de Polignac number, because 65805945 - 2³ = 65805937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65805897 and 65805906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36294 + ... + 38063.

It is an arithmetic number, because the mean of its divisors is an integer number (6692220).

Almost surely, 2^65805945 is an apocalyptic number.

It is an amenable number.

65805945 is a deficient number, since it is larger than the sum of its proper divisors (41269575).

65805945 is a wasteful number, since it uses less digits than its factorization.

65805945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74424.

The product of its (nonzero) digits is 216000, while the sum is 42.

The square root of 65805945 is about 8112.0863530907. The cubic root of 65805945 is about 403.7275411087.

The spelling of 65805945 in words is "sixty-five million, eight hundred five thousand, nine hundred forty-five".