1232666565 has 48 divisors (see below), whose sum is σ = 2142487872. Its totient is φ = 604910592.

The previous prime is 1232666521. The next prime is 1232666569. The reversal of 1232666565 is 5656662321.

It is not a de Polignac number, because 1232666565 - 2⁷ = 1232666437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232666569) 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 in 47 ways as a sum of consecutive naturals, for example, 1097094 + ... + 1098216.

It is an arithmetic number, because the mean of its divisors is an integer number (44635164).

Almost surely, 2^1232666565 is an apocalyptic number.

1232666565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1232666565 is a deficient number, since it is larger than the sum of its proper divisors (909821307).

1232666565 is a wasteful number, since it uses less digits than its factorization.

1232666565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590 (or 1577 counting only the distinct ones).

The product of its digits is 388800, while the sum is 42.

The square root of 1232666565 is about 35109.3515320349. The cubic root of 1232666565 is about 1072.2149839517.

The spelling of 1232666565 in words is "one billion, two hundred thirty-two million, six hundred sixty-six thousand, five hundred sixty-five".