66883933 has 16 divisors (see below), whose sum is σ = 75971520. Its totient is φ = 58496256.

The previous prime is 66883913. The next prime is 66883939. The reversal of 66883933 is 33938866.

It is a cyclic number.

It is not a de Polignac number, because 66883933 - 2²¹ = 64786781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66883939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15166 + ... + 19072.

It is an arithmetic number, because the mean of its divisors is an integer number (4748220).

Almost surely, 2^66883933 is an apocalyptic number.

It is an amenable number.

66883933 is a deficient number, since it is larger than the sum of its proper divisors (9087587).

66883933 is a wasteful number, since it uses less digits than its factorization.

66883933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996.

The product of its digits is 559872, while the sum is 46.

The square root of 66883933 is about 8178.2597782169. The cubic root of 66883933 is about 405.9201412977.

The spelling of 66883933 in words is "sixty-six million, eight hundred eighty-three thousand, nine hundred thirty-three".