66706737340 has 24 divisors (see below), whose sum is σ = 140371816032. Its totient is φ = 26627901120.

The previous prime is 66706737337. The next prime is 66706737343. The reversal of 66706737340 is 4373760766.

It is an interprime number because it is at equal distance from previous prime (66706737337) and next prime (66706737343).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66706737343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3414631 + ... + 3434110.

It is an arithmetic number, because the mean of its divisors is an integer number (5848825668).

Almost surely, 2^66706737340 is an apocalyptic number.

It is an amenable number.

66706737340 is an abundant number, since it is smaller than the sum of its proper divisors (73665078692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66706737340 is a wasteful number, since it uses less digits than its factorization.

66706737340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6849237 (or 6849235 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 49.

It can be divided in two parts, 667067 and 37340, that added together give a palindrome (704407).

The spelling of 66706737340 in words is "sixty-six billion, seven hundred six million, seven hundred thirty-seven thousand, three hundred forty".