66982750 has 32 divisors (see below), whose sum is σ = 129729600. Its totient is φ = 25866400.

The previous prime is 66982717. The next prime is 66982753. The reversal of 66982750 is 5728966.

It is a junction number, because it is equal to n+sod(n) for n = 66982697 and 66982706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66982753) 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, 2631 + ... + 11869.

It is an arithmetic number, because the mean of its divisors is an integer number (4054050).

Almost surely, 2^66982750 is an apocalyptic number.

66982750 is a deficient number, since it is larger than the sum of its proper divisors (62746850).

66982750 is a wasteful number, since it uses less digits than its factorization.

66982750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9285 (or 9275 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 66982750 is about 8184.2989925833. The cubic root of 66982750 is about 406.1199504832.

The spelling of 66982750 in words is "sixty-six million, nine hundred eighty-two thousand, seven hundred fifty".