1066645423 has 2 divisors, whose sum is σ = 1066645424. Its totient is φ = 1066645422.

The previous prime is 1066645417. The next prime is 1066645429. The reversal of 1066645423 is 3245466601.

It is a balanced prime because it is at equal distance from previous prime (1066645417) and next prime (1066645429).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066645423 is a prime.

It is a super-2 number, since 2×1066645423² = 2275464916813697858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066645429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533322711 + 533322712.

It is an arithmetic number, because the mean of its divisors is an integer number (533322712).

Almost surely, 2^1066645423 is an apocalyptic number.

1066645423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066645423 is an equidigital number, since it uses as much as digits as its factorization.

1066645423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 1066645423 is about 32659.5380095922. The cubic root of 1066645423 is about 1021.7391268038.

The spelling of 1066645423 in words is "one billion, sixty-six million, six hundred forty-five thousand, four hundred twenty-three".