66767033 has 4 divisors (see below), whose sum is σ = 66887460. Its totient is φ = 66646608.

The previous prime is 66767017. The next prime is 66767039. The reversal of 66767033 is 33076766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33076766 = 2 ⋅16538383.

It can be written as a sum of positive squares in 2 ways, for example, as 28858384 + 37908649 = 5372^2 + 6157^2 .

It is a cyclic number.

It is not a de Polignac number, because 66767033 - 2⁴ = 66767017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66767039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59378 + ... + 60491.

It is an arithmetic number, because the mean of its divisors is an integer number (16721865).

Almost surely, 2^66767033 is an apocalyptic number.

It is an amenable number.

66767033 is a deficient number, since it is larger than the sum of its proper divisors (120427).

66767033 is a wasteful number, since it uses less digits than its factorization.

66767033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120426.

The product of its (nonzero) digits is 95256, while the sum is 38.

The square root of 66767033 is about 8171.1096553651. The cubic root of 66767033 is about 405.6835137804.

The spelling of 66767033 in words is "sixty-six million, seven hundred sixty-seven thousand, thirty-three".