65075665 has 24 divisors (see below), whose sum is σ = 85148928. Its totient is φ = 47688480.

The previous prime is 65075663. The next prime is 65075669. The reversal of 65075665 is 56657056.

It is not a de Polignac number, because 65075665 - 2¹ = 65075663 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65075663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55374 + ... + 56536.

It is an arithmetic number, because the mean of its divisors is an integer number (3547872).

Almost surely, 2^65075665 is an apocalyptic number.

It is an amenable number.

65075665 is a deficient number, since it is larger than the sum of its proper divisors (20073263).

65075665 is a wasteful number, since it uses less digits than its factorization.

65075665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237 (or 1218 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 65075665 is about 8066.9489275686. The cubic root of 65075665 is about 402.2285298294.

The spelling of 65075665 in words is "sixty-five million, seventy-five thousand, six hundred sixty-five".