1226415663 has 12 divisors (see below), whose sum is σ = 1932533928. Its totient is φ = 743282160.

The previous prime is 1226415647. The next prime is 1226415689. The reversal of 1226415663 is 3665146221.

1226415663 is a `hidden beast` number, since 1 + 2 + 2 + 641 + 5 + 6 + 6 + 3 = 666.

It is not a de Polignac number, because 1226415663 - 2⁴ = 1226415647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226415263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6193920 + ... + 6194117.

It is an arithmetic number, because the mean of its divisors is an integer number (161044494).

Almost surely, 2^1226415663 is an apocalyptic number.

1226415663 is a deficient number, since it is larger than the sum of its proper divisors (706118265).

1226415663 is a wasteful number, since it uses less digits than its factorization.

1226415663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12388054 (or 12388051 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 1226415663 is about 35020.2179176544. The cubic root of 1226415663 is about 1070.3994965000.

The spelling of 1226415663 in words is "one billion, two hundred twenty-six million, four hundred fifteen thousand, six hundred sixty-three".