66670904667 has 8 divisors (see below), whose sum is σ = 89774683920. Its totient is φ = 44007197600.

The previous prime is 66670904653. The next prime is 66670904681. The reversal of 66670904667 is 76640907666.

It is an interprime number because it is at equal distance from previous prime (66670904653) and next prime (66670904681).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66670904667 - 2⁶ = 66670904603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66670904767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110017692 + ... + 110018297.

It is an arithmetic number, because the mean of its divisors is an integer number (11221835490).

Almost surely, 2^66670904667 is an apocalyptic number.

66670904667 is a deficient number, since it is larger than the sum of its proper divisors (23103779253).

66670904667 is a wasteful number, since it uses less digits than its factorization.

66670904667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220036093.

The product of its (nonzero) digits is 13716864, while the sum is 57.

The spelling of 66670904667 in words is "sixty-six billion, six hundred seventy million, nine hundred four thousand, six hundred sixty-seven".