666667040067 has 48 divisors (see below), whose sum is σ = 1141263864000. Its totient is φ = 366916580352.

The previous prime is 666667040027. The next prime is 666667040101. The reversal of 666667040067 is 760040766666.

It is not a de Polignac number, because 666667040067 - 2⁷ = 666667039939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 666667039995 and 666667040022.

It is not an unprimeable number, because it can be changed into a prime (666667040027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 301159 + ... + 1193327.

It is an arithmetic number, because the mean of its divisors is an integer number (23776330500).

Almost surely, 2^666667040067 is an apocalyptic number.

666667040067 is a deficient number, since it is larger than the sum of its proper divisors (474596823933).

666667040067 is a wasteful number, since it uses less digits than its factorization.

666667040067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892620 (or 892617 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 54.

The spelling of 666667040067 in words is "six hundred sixty-six billion, six hundred sixty-seven million, forty thousand, sixty-seven".