66674007340 has 48 divisors (see below), whose sum is σ = 140827260672. Its totient is φ = 26515282176.

The previous prime is 66674007269. The next prime is 66674007343. The reversal of 66674007340 is 4370047666.

It is not an unprimeable number, because it can be changed into a prime (66674007343) 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 15 ways as a sum of consecutive naturals, for example, 3545242 + ... + 3563998.

It is an arithmetic number, because the mean of its divisors is an integer number (2933901264).

Almost surely, 2^66674007340 is an apocalyptic number.

It is an amenable number.

66674007340 is an abundant number, since it is smaller than the sum of its proper divisors (74153253332).

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

66674007340 is a wasteful number, since it uses less digits than its factorization.

66674007340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19786 (or 19784 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 66674007340 in words is "sixty-six billion, six hundred seventy-four million, seven thousand, three hundred forty".