65687045 has 4 divisors (see below), whose sum is σ = 78824460. Its totient is φ = 52549632.

The previous prime is 65687033. The next prime is 65687051. The reversal of 65687045 is 54078656.

65687045 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 42627841 + 23059204 = 6529^2 + 4802^2 .

It is a cyclic number.

It is not a de Polignac number, because 65687045 - 2¹² = 65682949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65686993 and 65687011.

It is a congruent number.

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, 6568700 + ... + 6568709.

It is an arithmetic number, because the mean of its divisors is an integer number (19706115).

Almost surely, 2^65687045 is an apocalyptic number.

It is an amenable number.

65687045 is a deficient number, since it is larger than the sum of its proper divisors (13137415).

65687045 is a wasteful number, since it uses less digits than its factorization.

65687045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13137414.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 65687045 is about 8104.7544688288. The cubic root of 65687045 is about 403.4842391554.

The spelling of 65687045 in words is "sixty-five million, six hundred eighty-seven thousand, forty-five".