65690750 has 32 divisors (see below), whose sum is σ = 124001280. Its totient is φ = 26056800.

The previous prime is 65690747. The next prime is 65690759. The reversal of 65690750 is 5709656.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65690759) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 30716 + ... + 32784.

It is an arithmetic number, because the mean of its divisors is an integer number (3875040).

Almost surely, 2^65690750 is an apocalyptic number.

65690750 is a deficient number, since it is larger than the sum of its proper divisors (58310530).

65690750 is a wasteful number, since it uses less digits than its factorization.

65690750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213 (or 2203 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 65690750 is about 8104.9830351457. The cubic root of 65690750 is about 403.4918250298.

The spelling of 65690750 in words is "sixty-five million, six hundred ninety thousand, seven hundred fifty".