66760893 has 6 divisors (see below), whose sum is σ = 96432414. Its totient is φ = 44507256.

The previous prime is 66760891. The next prime is 66760933. The reversal of 66760893 is 39806766.

It can be written as a sum of positive squares in only one way, i.e., 46212804 + 20548089 = 6798^2 + 4533^2 .

It is not a de Polignac number, because 66760893 - 2¹ = 66760891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66760891) 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 5 ways as a sum of consecutive naturals, for example, 3708930 + ... + 3708947.

It is an arithmetic number, because the mean of its divisors is an integer number (16072069).

Almost surely, 2^66760893 is an apocalyptic number.

It is an amenable number.

66760893 is a deficient number, since it is larger than the sum of its proper divisors (29671521).

66760893 is a wasteful number, since it uses less digits than its factorization.

66760893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7417883 (or 7417880 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 66760893 is about 8170.7339327627. The cubic root of 66760893 is about 405.6710776373.

The spelling of 66760893 in words is "sixty-six million, seven hundred sixty thousand, eight hundred ninety-three".