667400067340 has 24 divisors (see below), whose sum is σ = 1401611888880. Its totient is φ = 266946360768.

The previous prime is 667400067331. The next prime is 667400067377. The reversal of 667400067340 is 43760004766.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 448995 + ... + 1239514.

It is an arithmetic number, because the mean of its divisors is an integer number (58400495370).

Almost surely, 2^667400067340 is an apocalyptic number.

It is an amenable number.

667400067340 is an abundant number, since it is smaller than the sum of its proper divisors (734211821540).

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

667400067340 is a wasteful number, since it uses less digits than its factorization.

667400067340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708281 (or 1708279 counting only the distinct ones).

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

The spelling of 667400067340 in words is "six hundred sixty-seven billion, four hundred million, sixty-seven thousand, three hundred forty".