65974775 has 12 divisors (see below), whose sum is σ = 81963504. Its totient is φ = 52680000.

The previous prime is 65974747. The next prime is 65974801. The reversal of 65974775 is 57747956.

It is not a de Polignac number, because 65974775 - 2¹⁰ = 65973751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12830 + ... + 17220.

It is an arithmetic number, because the mean of its divisors is an integer number (6830292).

Almost surely, 2^65974775 is an apocalyptic number.

65974775 is a deficient number, since it is larger than the sum of its proper divisors (15988729).

65974775 is a wasteful number, since it uses less digits than its factorization.

65974775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002 (or 4997 counting only the distinct ones).

The product of its digits is 1852200, while the sum is 50.

The square root of 65974775 is about 8122.4857648382. The cubic root of 65974775 is about 404.0725105120.

The spelling of 65974775 in words is "sixty-five million, nine hundred seventy-four thousand, seven hundred seventy-five".