66246623 has 8 divisors (see below), whose sum is σ = 66864768. Its totient is φ = 65631384.

The previous prime is 66246619. The next prime is 66246667. The reversal of 66246623 is 32664266.

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

It is a cyclic number.

It is not a de Polignac number, because 66246623 - 2² = 66246619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66246683) 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, 88790 + ... + 89532.

It is an arithmetic number, because the mean of its divisors is an integer number (8358096).

Almost surely, 2^66246623 is an apocalyptic number.

66246623 is a deficient number, since it is larger than the sum of its proper divisors (618145).

66246623 is a wasteful number, since it uses less digits than its factorization.

66246623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453.

The product of its digits is 62208, while the sum is 35.

The square root of 66246623 is about 8139.2028479452. The cubic root of 66246623 is about 404.6267414028.

The spelling of 66246623 in words is "sixty-six million, two hundred forty-six thousand, six hundred twenty-three".