66716255 has 8 divisors (see below), whose sum is σ = 81254832. Its totient is φ = 52576128.

The previous prime is 66716203. The next prime is 66716297. The reversal of 66716255 is 55261766.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66716255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99242 + ... + 99911.

It is an arithmetic number, because the mean of its divisors is an integer number (10156854).

Almost surely, 2^66716255 is an apocalyptic number.

66716255 is a deficient number, since it is larger than the sum of its proper divisors (14538577).

66716255 is a wasteful number, since it uses less digits than its factorization.

66716255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199225.

The product of its digits is 75600, while the sum is 38.

The square root of 66716255 is about 8168.0018976491. The cubic root of 66716255 is about 405.5806435416.

The spelling of 66716255 in words is "sixty-six million, seven hundred sixteen thousand, two hundred fifty-five".