66670101 has 16 divisors (see below), whose sum is σ = 102177600. Its totient is φ = 42913584.

The previous prime is 66670067. The next prime is 66670103. The reversal of 66670101 is 10107666.

It is not a de Polignac number, because 66670101 - 2¹⁷ = 66539029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66670103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41791 + ... + 43356.

It is an arithmetic number, because the mean of its divisors is an integer number (6386100).

Almost surely, 2^66670101 is an apocalyptic number.

It is an amenable number.

66670101 is a deficient number, since it is larger than the sum of its proper divisors (35507499).

66670101 is a wasteful number, since it uses less digits than its factorization.

66670101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85185 (or 85179 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 66670101 is about 8165.1761156756. The cubic root of 66670101 is about 405.4870956884.

Adding to 66670101 its reverse (10107666), we get a palindrome (76777767).

The spelling of 66670101 in words is "sixty-six million, six hundred seventy thousand, one hundred one".