66957043 has 2 divisors, whose sum is σ = 66957044. Its totient is φ = 66957042.

The previous prime is 66957029. The next prime is 66957049. The reversal of 66957043 is 34075966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66957043 - 2⁹ = 66956531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66956987 and 66957005.

It is not a weakly prime, because it can be changed into another prime (66957049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33478521 + 33478522.

It is an arithmetic number, because the mean of its divisors is an integer number (33478522).

Almost surely, 2^66957043 is an apocalyptic number.

66957043 is a deficient number, since it is larger than the sum of its proper divisors (1).

66957043 is an equidigital number, since it uses as much as digits as its factorization.

66957043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 66957043 is about 8182.7283347304. The cubic root of 66957043 is about 406.0679895358.

The spelling of 66957043 in words is "sixty-six million, nine hundred fifty-seven thousand, forty-three".