66673400607 has 24 divisors (see below), whose sum is σ = 106081143168. Its totient is φ = 40015803600.

The previous prime is 66673400603. The next prime is 66673400611. The reversal of 66673400607 is 70600437666.

It is an interprime number because it is at equal distance from previous prime (66673400603) and next prime (66673400611).

It is not a de Polignac number, because 66673400607 - 2² = 66673400603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66673400603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3259069 + ... + 3279462.

It is an arithmetic number, because the mean of its divisors is an integer number (4420047632).

Almost surely, 2^66673400607 is an apocalyptic number.

66673400607 is a deficient number, since it is larger than the sum of its proper divisors (39407742561).

66673400607 is a wasteful number, since it uses less digits than its factorization.

66673400607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6538651 (or 6538648 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 45.

The spelling of 66673400607 in words is "sixty-six billion, six hundred seventy-three million, four hundred thousand, six hundred seven".