66983733 has 16 divisors (see below), whose sum is σ = 99623040. Its totient is φ = 44481312.

The previous prime is 66983731. The next prime is 66983753. The reversal of 66983733 is 33738966.

It is a happy number.

It is not a de Polignac number, because 66983733 - 2¹ = 66983731 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66983731) 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, 2385 + ... + 11817.

It is an arithmetic number, because the mean of its divisors is an integer number (6226440).

Almost surely, 2^66983733 is an apocalyptic number.

It is an amenable number.

66983733 is a deficient number, since it is larger than the sum of its proper divisors (32639307).

66983733 is a wasteful number, since it uses less digits than its factorization.

66983733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9705 (or 9699 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 66983733 is about 8184.3590463762. The cubic root of 66983733 is about 406.1219371338.

The spelling of 66983733 in words is "sixty-six million, nine hundred eighty-three thousand, seven hundred thirty-three".