1020106565 has 16 divisors (see below), whose sum is σ = 1262580480. Its totient is φ = 790795200.

The previous prime is 1020106537. The next prime is 1020106567. The reversal of 1020106565 is 5656010201.

It is a de Polignac number, because none of the positive numbers 2^k-1020106565 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020106567) 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 in 15 ways as a sum of consecutive naturals, for example, 2246 + ... + 45224.

It is an arithmetic number, because the mean of its divisors is an integer number (78911280).

Almost surely, 2^1020106565 is an apocalyptic number.

It is an amenable number.

1020106565 is a deficient number, since it is larger than the sum of its proper divisors (242473915).

1020106565 is a wasteful number, since it uses less digits than its factorization.

1020106565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43132.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1020106565 is about 31939.1071415592. The cubic root of 1020106565 is about 1006.6577641397.

Adding to 1020106565 its reverse (5656010201), we get a palindrome (6676116766).

The spelling of 1020106565 in words is "one billion, twenty million, one hundred six thousand, five hundred sixty-five".