1213560663 has 32 divisors (see below), whose sum is σ = 1928019456. Its totient is φ = 664530048.

The previous prime is 1213560631. The next prime is 1213560703. The reversal of 1213560663 is 3660653121.

It is not a de Polignac number, because 1213560663 - 2⁵ = 1213560631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213560463) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 35181 + ... + 60537.

It is an arithmetic number, because the mean of its divisors is an integer number (60250608).

Almost surely, 2^1213560663 is an apocalyptic number.

1213560663 is a deficient number, since it is larger than the sum of its proper divisors (714458793).

1213560663 is a wasteful number, since it uses less digits than its factorization.

1213560663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25463.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 1213560663 is about 34836.1975967527. The cubic root of 1213560663 is about 1066.6464612167.

The spelling of 1213560663 in words is "one billion, two hundred thirteen million, five hundred sixty thousand, six hundred sixty-three".