1065646501 has 2 divisors, whose sum is σ = 1065646502. Its totient is φ = 1065646500.

The previous prime is 1065646493. The next prime is 1065646507. The reversal of 1065646501 is 1056465601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 783440100 + 282206401 = 27990^2 + 16799^2 .

It is a cyclic number.

It is not a de Polignac number, because 1065646501 - 2³ = 1065646493 is a prime.

It is a super-2 number, since 2×1065646501² = 2271204930187086002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1065646507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532823250 + 532823251.

It is an arithmetic number, because the mean of its divisors is an integer number (532823251).

Almost surely, 2^1065646501 is an apocalyptic number.

It is an amenable number.

1065646501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065646501 is an equidigital number, since it uses as much as digits as its factorization.

1065646501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1065646501 is about 32644.2414676770. The cubic root of 1065646501 is about 1021.4200715527.

Subtracting from 1065646501 its reverse (1056465601), we obtain a square (9180900 = 3030²).

The spelling of 1065646501 in words is "one billion, sixty-five million, six hundred forty-six thousand, five hundred one".