1226653656 has 32 divisors (see below), whose sum is σ = 3069446640. Its totient is φ = 408509568.

The previous prime is 1226653643. The next prime is 1226653669. The reversal of 1226653656 is 6563566221.

It is an interprime number because it is at equal distance from previous prime (1226653643) and next prime (1226653669).

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 7 ways as a sum of consecutive naturals, for example, 3930 + ... + 49686.

Almost surely, 2^1226653656 is an apocalyptic number.

It is an amenable number.

1226653656 is an abundant number, since it is smaller than the sum of its proper divisors (1842792984).

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

1226653656 is a wasteful number, since it uses less digits than its factorization.

1226653656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46883 (or 46879 counting only the distinct ones).

The product of its digits is 388800, while the sum is 42.

The square root of 1226653656 is about 35023.6156899884. The cubic root of 1226653656 is about 1070.4687310774.

The spelling of 1226653656 in words is "one billion, two hundred twenty-six million, six hundred fifty-three thousand, six hundred fifty-six".