66123014 has 4 divisors (see below), whose sum is σ = 99184524. Its totient is φ = 33061506.

The previous prime is 66123007. The next prime is 66123017. The reversal of 66123014 is 41032166.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66123017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16530752 + ... + 16530755.

It is an arithmetic number, because the mean of its divisors is an integer number (24796131).

Almost surely, 2^66123014 is an apocalyptic number.

66123014 is a deficient number, since it is larger than the sum of its proper divisors (33061510).

66123014 is a wasteful number, since it uses less digits than its factorization.

66123014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33061509.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 66123014 is about 8131.6058684617. The cubic root of 66123014 is about 404.3749215377.

The spelling of 66123014 in words is "sixty-six million, one hundred twenty-three thousand, fourteen".