66734253 has 8 divisors (see below), whose sum is σ = 98865600. Its totient is φ = 44489484.

The previous prime is 66734221. The next prime is 66734257. The reversal of 66734253 is 35243766.

It is not a de Polignac number, because 66734253 - 2⁵ = 66734221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66734257) 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, 1235793 + ... + 1235846.

It is an arithmetic number, because the mean of its divisors is an integer number (12358200).

Almost surely, 2^66734253 is an apocalyptic number.

It is an amenable number.

66734253 is a deficient number, since it is larger than the sum of its proper divisors (32131347).

66734253 is a wasteful number, since it uses less digits than its factorization.

66734253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471648 (or 2471642 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 66734253 is about 8169.1035615911. The cubic root of 66734253 is about 405.6171113365.

The spelling of 66734253 in words is "sixty-six million, seven hundred thirty-four thousand, two hundred fifty-three".