67128101 has 8 divisors (see below), whose sum is σ = 69138720. Its totient is φ = 65127888.

The previous prime is 67128091. The next prime is 67128151. The reversal of 67128101 is 10182176.

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 67128101 - 2²⁶ = 19237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67128151) 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, 11630 + ... + 16416.

It is an arithmetic number, because the mean of its divisors is an integer number (8642340).

Almost surely, 2^67128101 is an apocalyptic number.

It is an amenable number.

67128101 is a deficient number, since it is larger than the sum of its proper divisors (2010619).

67128101 is a wasteful number, since it uses less digits than its factorization.

67128101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5203.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 67128101 is about 8193.1740491704. The cubic root of 67128101 is about 406.4134951867.

The spelling of 67128101 in words is "sixty-seven million, one hundred twenty-eight thousand, one hundred one".