66670011007 has 4 divisors (see below), whose sum is σ = 66670767736. Its totient is φ = 66669254280.

The previous prime is 66670010987. The next prime is 66670011017. The reversal of 66670011007 is 70011007666.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 66670011007 - 2¹⁵ = 66669978239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66670011017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225669 + ... + 429262.

It is an arithmetic number, because the mean of its divisors is an integer number (16667691934).

Almost surely, 2^66670011007 is an apocalyptic number.

66670011007 is a deficient number, since it is larger than the sum of its proper divisors (756729).

66670011007 is a wasteful number, since it uses less digits than its factorization.

66670011007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756728.

The product of its (nonzero) digits is 10584, while the sum is 34.

The spelling of 66670011007 in words is "sixty-six billion, six hundred seventy million, eleven thousand, seven".