66192427 has 4 divisors (see below), whose sum is σ = 75648496. Its totient is φ = 56736360.

The previous prime is 66192419. The next prime is 66192431. The reversal of 66192427 is 72429166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66192427 - 2³ = 66192419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66192457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4728024 + ... + 4728037.

It is an arithmetic number, because the mean of its divisors is an integer number (18912124).

Almost surely, 2^66192427 is an apocalyptic number.

66192427 is a deficient number, since it is larger than the sum of its proper divisors (9456069).

66192427 is an equidigital number, since it uses as much as digits as its factorization.

66192427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9456068.

The product of its digits is 36288, while the sum is 37.

The square root of 66192427 is about 8135.8728480723. The cubic root of 66192427 is about 404.5163703246.

The spelling of 66192427 in words is "sixty-six million, one hundred ninety-two thousand, four hundred twenty-seven".