66212753 has 2 divisors, whose sum is σ = 66212754. Its totient is φ = 66212752.

The previous prime is 66212747. The next prime is 66212759. The reversal of 66212753 is 35721266.

It is a balanced prime because it is at equal distance from previous prime (66212747) and next prime (66212759).

It can be written as a sum of positive squares in only one way, i.e., 60341824 + 5870929 = 7768^2 + 2423^2 .

It is a cyclic number.

It is not a de Polignac number, because 66212753 - 2⁴ = 66212737 is a prime.

It is not a weakly prime, because it can be changed into another prime (66212759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33106376 + 33106377.

It is an arithmetic number, because the mean of its divisors is an integer number (33106377).

Almost surely, 2^66212753 is an apocalyptic number.

It is an amenable number.

66212753 is a deficient number, since it is larger than the sum of its proper divisors (1).

66212753 is an equidigital number, since it uses as much as digits as its factorization.

66212753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 66212753 is about 8137.1219113394. The cubic root of 66212753 is about 404.5577716281.

The spelling of 66212753 in words is "sixty-six million, two hundred twelve thousand, seven hundred fifty-three".