1065564779 has 2 divisors, whose sum is σ = 1065564780. Its totient is φ = 1065564778.

The previous prime is 1065564733. The next prime is 1065564791. The reversal of 1065564779 is 9774655601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1065564779 is a prime.

It is a super-2 number, since 2×1065564779² = 2270856596490637682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1065564979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532782389 + 532782390.

It is an arithmetic number, because the mean of its divisors is an integer number (532782390).

Almost surely, 2^1065564779 is an apocalyptic number.

1065564779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065564779 is an equidigital number, since it uses as much as digits as its factorization.

1065564779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The square root of 1065564779 is about 32642.9897374612. The cubic root of 1065564779 is about 1021.3939607600.

The spelling of 1065564779 in words is "one billion, sixty-five million, five hundred sixty-four thousand, seven hundred seventy-nine".