66729043 has 2 divisors, whose sum is σ = 66729044. Its totient is φ = 66729042.

The previous prime is 66728999. The next prime is 66729053. The reversal of 66729043 is 34092766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66729043 - 2²⁵ = 33174611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66728993 and 66729011.

It is not a weakly prime, because it can be changed into another prime (66729053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33364521 + 33364522.

It is an arithmetic number, because the mean of its divisors is an integer number (33364522).

Almost surely, 2^66729043 is an apocalyptic number.

66729043 is a deficient number, since it is larger than the sum of its proper divisors (1).

66729043 is an equidigital number, since it uses as much as digits as its factorization.

66729043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 66729043 is about 8168.7846709287. The cubic root of 66729043 is about 405.6065554373.

The spelling of 66729043 in words is "sixty-six million, seven hundred twenty-nine thousand, forty-three".