1223980065 has 224 divisors, whose sum is σ = 2833056000. Its totient is φ = 502951680.

The previous prime is 1223980049. The next prime is 1223980097. The reversal of 1223980065 is 5600893221.

It is not a de Polignac number, because 1223980065 - 2⁴ = 1223980049 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 13752541 + ... + 13752629.

Almost surely, 2^1223980065 is an apocalyptic number.

1223980065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1223980065 is an abundant number, since it is smaller than the sum of its proper divisors (1609075935).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223980065 is an frugal number, since it uses more digits than its factorization.

1223980065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1223980065 is about 34985.4264658872. The cubic root of 1223980065 is about 1069.6904409193.

The spelling of 1223980065 in words is "one billion, two hundred twenty-three million, nine hundred eighty thousand, sixty-five".