66123606 has 8 divisors (see below), whose sum is σ = 132247224. Its totient is φ = 22041200.

The previous prime is 66123599. The next prime is 66123613. The reversal of 66123606 is 60632166.

It is an interprime number because it is at equal distance from previous prime (66123599) and next prime (66123613).

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

66123606 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5510295 + ... + 5510306.

It is an arithmetic number, because the mean of its divisors is an integer number (16530903).

Almost surely, 2^66123606 is an apocalyptic number.

66123606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66123606 is a wasteful number, since it uses less digits than its factorization.

66123606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11020606.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 66123606 is about 8131.6422695542. The cubic root of 66123606 is about 404.3761283250.

The spelling of 66123606 in words is "sixty-six million, one hundred twenty-three thousand, six hundred six".