667400070067 has 12 divisors (see below), whose sum is σ = 714068774440. Its totient is φ = 623622203136.

The previous prime is 667400070053. The next prime is 667400070091. The reversal of 667400070067 is 760070004766.

667400070067 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 667400070067 - 2¹⁵ = 667400037299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667400070767) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8266818 + ... + 8347159.

Almost surely, 2^667400070067 is an apocalyptic number.

667400070067 is a deficient number, since it is larger than the sum of its proper divisors (46668704373).

667400070067 is a wasteful number, since it uses less digits than its factorization.

667400070067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16614150 (or 16614133 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 43.

The spelling of 667400070067 in words is "six hundred sixty-seven billion, four hundred million, seventy thousand, sixty-seven".