66713255 has 12 divisors (see below), whose sum is σ = 93126600. Its totient is φ = 45746064.

The previous prime is 66713221. The next prime is 66713267. The reversal of 66713255 is 55231766.

It is not a de Polignac number, because 66713255 - 2⁸ = 66712999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135905 + ... + 136394.

It is an arithmetic number, because the mean of its divisors is an integer number (7760550).

Almost surely, 2^66713255 is an apocalyptic number.

66713255 is a deficient number, since it is larger than the sum of its proper divisors (26413345).

66713255 is a wasteful number, since it uses less digits than its factorization.

66713255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272318 (or 272311 counting only the distinct ones).

The product of its digits is 37800, while the sum is 35.

The square root of 66713255 is about 8167.8182521405. The cubic root of 66713255 is about 405.5745642627.

The spelling of 66713255 in words is "sixty-six million, seven hundred thirteen thousand, two hundred fifty-five".