66741953 has 2 divisors, whose sum is σ = 66741954. Its totient is φ = 66741952.

The previous prime is 66741947. The next prime is 66741959. The reversal of 66741953 is 35914766.

It is a balanced prime because it is at equal distance from previous prime (66741947) and next prime (66741959).

It can be written as a sum of positive squares in only one way, i.e., 63473089 + 3268864 = 7967^2 + 1808^2 .

It is a cyclic number.

It is not a de Polignac number, because 66741953 - 2²⁰ = 65693377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66741953.

It is not a weakly prime, because it can be changed into another prime (66741959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33370976 + 33370977.

It is an arithmetic number, because the mean of its divisors is an integer number (33370977).

Almost surely, 2^66741953 is an apocalyptic number.

It is an amenable number.

66741953 is a deficient number, since it is larger than the sum of its proper divisors (1).

66741953 is an equidigital number, since it uses as much as digits as its factorization.

66741953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 41.

The square root of 66741953 is about 8169.5748359385. The cubic root of 66741953 is about 405.6327111797.

The spelling of 66741953 in words is "sixty-six million, seven hundred forty-one thousand, nine hundred fifty-three".