1223776605 has 32 divisors (see below), whose sum is σ = 2063370240. Its totient is φ = 617647680.

The previous prime is 1223776583. The next prime is 1223776613. The reversal of 1223776605 is 5066773221.

It is not a de Polignac number, because 1223776605 - 2⁸ = 1223776349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 346800 + ... + 350310.

It is an arithmetic number, because the mean of its divisors is an integer number (64480320).

Almost surely, 2^1223776605 is an apocalyptic number.

1223776605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1223776605 is a deficient number, since it is larger than the sum of its proper divisors (839593635).

1223776605 is a wasteful number, since it uses less digits than its factorization.

1223776605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4761.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 1223776605 is about 34982.5185628479. The cubic root of 1223776605 is about 1069.6311667302.

The spelling of 1223776605 in words is "one billion, two hundred twenty-three million, seven hundred seventy-six thousand, six hundred five".