66734693 has 4 divisors (see below), whose sum is σ = 66927360. Its totient is φ = 66542028.

The previous prime is 66734687. The next prime is 66734711. The reversal of 66734693 is 39643766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66734693 - 2¹² = 66730597 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 (66734623) 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, 95813 + ... + 96506.

It is an arithmetic number, because the mean of its divisors is an integer number (16731840).

Almost surely, 2^66734693 is an apocalyptic number.

It is an amenable number.

66734693 is a deficient number, since it is larger than the sum of its proper divisors (192667).

66734693 is a wasteful number, since it uses less digits than its factorization.

66734693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192666.

The product of its digits is 489888, while the sum is 44.

The square root of 66734693 is about 8169.1304922862. The cubic root of 66734693 is about 405.6180027884.

The spelling of 66734693 in words is "sixty-six million, seven hundred thirty-four thousand, six hundred ninety-three".