65717950 has 12 divisors (see below), whose sum is σ = 122235480. Its totient is φ = 26287160.

The previous prime is 65717947. The next prime is 65717963. The reversal of 65717950 is 5971756.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 657130 + ... + 657229.

It is an arithmetic number, because the mean of its divisors is an integer number (10186290).

Almost surely, 2^65717950 is an apocalyptic number.

65717950 is a deficient number, since it is larger than the sum of its proper divisors (56517530).

65717950 is a wasteful number, since it uses less digits than its factorization.

65717950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314371 (or 1314366 counting only the distinct ones).

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 65717950 is about 8106.6608415549. The cubic root of 65717950 is about 403.5475074671.

The spelling of 65717950 in words is "sixty-five million, seven hundred seventeen thousand, nine hundred fifty".