1023260665 has 32 divisors (see below), whose sum is σ = 1453406976. Its totient is φ = 677064960.

The previous prime is 1023260633. The next prime is 1023260681. The reversal of 1023260665 is 5660623201.

It is not a de Polignac number, because 1023260665 - 2⁵ = 1023260633 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108634 + ... + 117676.

It is an arithmetic number, because the mean of its divisors is an integer number (45418968).

Almost surely, 2^1023260665 is an apocalyptic number.

It is an amenable number.

1023260665 is a deficient number, since it is larger than the sum of its proper divisors (430146311).

1023260665 is an equidigital number, since it uses as much as digits as its factorization.

1023260665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9169.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1023260665 is about 31988.4458046964. The cubic root of 1023260665 is about 1007.6942024150.

Adding to 1023260665 its reverse (5660623201), we get a palindrome (6683883866).

The spelling of 1023260665 in words is "one billion, twenty-three million, two hundred sixty thousand, six hundred sixty-five".