66740750 has 32 divisors (see below), whose sum is σ = 125573760. Its totient is φ = 26560800.

The previous prime is 66740747. The next prime is 66740767. The reversal of 66740750 is 5704766.

It is a self number, because there is not a number n which added to its sum of digits gives 66740750.

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, 59192 + ... + 60308.

It is an arithmetic number, because the mean of its divisors is an integer number (3924180).

Almost surely, 2^66740750 is an apocalyptic number.

66740750 is a deficient number, since it is larger than the sum of its proper divisors (58833010).

66740750 is a wasteful number, since it uses less digits than its factorization.

66740750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373 (or 1363 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 66740750 is about 8169.5012087642. The cubic root of 66740750 is about 405.6302740365.

The spelling of 66740750 in words is "sixty-six million, seven hundred forty thousand, seven hundred fifty".