66260193 has 8 divisors (see below), whose sum is σ = 89021856. Its totient is φ = 43836000.

The previous prime is 66260179. The next prime is 66260197. The reversal of 66260193 is 39106266.

It is a happy number.

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

It is not a de Polignac number, because 66260193 - 2⁹ = 66259681 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66260197) 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, 83908 + ... + 84693.

It is an arithmetic number, because the mean of its divisors is an integer number (11127732).

Almost surely, 2^66260193 is an apocalyptic number.

It is an amenable number.

66260193 is a deficient number, since it is larger than the sum of its proper divisors (22761663).

66260193 is a wasteful number, since it uses less digits than its factorization.

66260193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168735.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 66260193 is about 8140.0364249799. The cubic root of 66260193 is about 404.6543675155.

The spelling of 66260193 in words is "sixty-six million, two hundred sixty thousand, one hundred ninety-three".