1066624369 has 2 divisors, whose sum is σ = 1066624370. Its totient is φ = 1066624368.

The previous prime is 1066624367. The next prime is 1066624393. The reversal of 1066624369 is 9634266601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1016780769 + 49843600 = 31887^2 + 7060^2 .

It is an emirp because it is prime and its reverse (9634266601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1066624369 - 2¹ = 1066624367 is a prime.

It is a super-2 number, since 2×1066624369² = 2275375089089296322, which contains 22 as substring.

Together with 1066624367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1066624367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533312184 + 533312185.

It is an arithmetic number, because the mean of its divisors is an integer number (533312185).

Almost surely, 2^1066624369 is an apocalyptic number.

It is an amenable number.

1066624369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066624369 is an equidigital number, since it uses as much as digits as its factorization.

1066624369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 1066624369 is about 32659.2156825604. The cubic root of 1066624369 is about 1021.7324042208.

The spelling of 1066624369 in words is "one billion, sixty-six million, six hundred twenty-four thousand, three hundred sixty-nine".