66123027 has 8 divisors (see below), whose sum is σ = 97960080. Its totient is φ = 44082000.

The previous prime is 66123019. The next prime is 66123041. The reversal of 66123027 is 72032166.

It is a happy number.

It is not a de Polignac number, because 66123027 - 2³ = 66123019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2449001 = 66123027 / (6 + 6 + 1 + 2 + 3 + 0 + 2 + 7).

It is not an unprimeable number, because it can be changed into a prime (66123007) 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, 1224474 + ... + 1224527.

It is an arithmetic number, because the mean of its divisors is an integer number (12245010).

Almost surely, 2^66123027 is an apocalyptic number.

66123027 is a deficient number, since it is larger than the sum of its proper divisors (31837053).

66123027 is a wasteful number, since it uses less digits than its factorization.

66123027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449010 (or 2449004 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 66123027 is about 8131.6066678117. The cubic root of 66123027 is about 404.3749480382.

The spelling of 66123027 in words is "sixty-six million, one hundred twenty-three thousand, twenty-seven".