66275750 has 32 divisors (see below), whose sum is σ = 124585344. Its totient is φ = 26400000.

The previous prime is 66275669. The next prime is 66275761. The reversal of 66275750 is 5757266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87875 + ... + 88625.

It is an arithmetic number, because the mean of its divisors is an integer number (3893292).

Almost surely, 2^66275750 is an apocalyptic number.

66275750 is a deficient number, since it is larger than the sum of its proper divisors (58309594).

66275750 is a wasteful number, since it uses less digits than its factorization.

66275750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121 (or 1111 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 66275750 is about 8140.9919543014. The cubic root of 66275750 is about 404.6860341673.

The spelling of 66275750 in words is "sixty-six million, two hundred seventy-five thousand, seven hundred fifty".