66772933 has 8 divisors (see below), whose sum is σ = 70560000. Its totient is φ = 63059568.

The previous prime is 66772921. The next prime is 66772939. The reversal of 66772933 is 33927766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66772933 - 2²¹ = 64675781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66772933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66772939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16558 + ... + 20191.

It is an arithmetic number, because the mean of its divisors is an integer number (8820000).

Almost surely, 2^66772933 is an apocalyptic number.

It is an amenable number.

66772933 is a deficient number, since it is larger than the sum of its proper divisors (3787067).

66772933 is a wasteful number, since it uses less digits than its factorization.

66772933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36851.

The product of its digits is 285768, while the sum is 43.

The square root of 66772933 is about 8171.4706754660. The cubic root of 66772933 is about 405.6954631019.

The spelling of 66772933 in words is "sixty-six million, seven hundred seventy-two thousand, nine hundred thirty-three".