66750706 has 32 divisors (see below), whose sum is σ = 114561216. Its totient is φ = 28896000.

The previous prime is 66750683. The next prime is 66750713. The reversal of 66750706 is 60705766.

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, 37926 + ... + 39646.

It is an arithmetic number, because the mean of its divisors is an integer number (3580038).

Almost surely, 2^66750706 is an apocalyptic number.

66750706 is a deficient number, since it is larger than the sum of its proper divisors (47810510).

66750706 is a wasteful number, since it uses less digits than its factorization.

66750706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 66750706 is about 8170.1105255682. The cubic root of 66750706 is about 405.6504428949.

The spelling of 66750706 in words is "sixty-six million, seven hundred fifty thousand, seven hundred six".