65663075 has 12 divisors (see below), whose sum is σ = 81718728. Its totient is φ = 52339200.

The previous prime is 65663071. The next prime is 65663077. The reversal of 65663075 is 57036656.

It is not a de Polignac number, because 65663075 - 2² = 65663071 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65663071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2435 + ... + 11715.

It is an arithmetic number, because the mean of its divisors is an integer number (6809894).

Almost surely, 2^65663075 is an apocalyptic number.

65663075 is a deficient number, since it is larger than the sum of its proper divisors (16055653).

65663075 is a wasteful number, since it uses less digits than its factorization.

65663075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9574 (or 9569 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 65663075 is about 8103.2755722609. The cubic root of 65663075 is about 403.4351544190.

The spelling of 65663075 in words is "sixty-five million, six hundred sixty-three thousand, seventy-five".