1230617655 has 12 divisors (see below), whose sum is σ = 2133070680. Its totient is φ = 656329392.

The previous prime is 1230617623. The next prime is 1230617711. The reversal of 1230617655 is 5567160321.

1230617655 is a `hidden beast` number, since 1 + 2 + 30 + 617 + 6 + 5 + 5 = 666.

It is not a de Polignac number, because 1230617655 - 2⁵ = 1230617623 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 13673485 + ... + 13673574.

It is an arithmetic number, because the mean of its divisors is an integer number (177755890).

Almost surely, 2^1230617655 is an apocalyptic number.

1230617655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1230617655 is a deficient number, since it is larger than the sum of its proper divisors (902453025).

1230617655 is a wasteful number, since it uses less digits than its factorization.

1230617655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27347070 (or 27347067 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 1230617655 is about 35080.1604186754. The cubic root of 1230617655 is about 1071.6205841394.

Adding to 1230617655 its reverse (5567160321), we get a palindrome (6797777976).

The spelling of 1230617655 in words is "one billion, two hundred thirty million, six hundred seventeen thousand, six hundred fifty-five".