1065150661 has 2 divisors, whose sum is σ = 1065150662. Its totient is φ = 1065150660.

The previous prime is 1065150649. The next prime is 1065150701. The reversal of 1065150661 is 1660515601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 820822500 + 244328161 = 28650^2 + 15631^2 .

It is an emirp because it is prime and its reverse (1660515601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1065150661 - 2⁷ = 1065150533 is a prime.

It is a super-2 number, since 2×1065150661² = 2269091861257473842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1065150641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532575330 + 532575331.

It is an arithmetic number, because the mean of its divisors is an integer number (532575331).

Almost surely, 2^1065150661 is an apocalyptic number.

It is an amenable number.

1065150661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065150661 is an equidigital number, since it uses as much as digits as its factorization.

1065150661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1065150661 is about 32636.6459826987. The cubic root of 1065150661 is about 1021.2616264213.

The spelling of 1065150661 in words is "one billion, sixty-five million, one hundred fifty thousand, six hundred sixty-one".