1226427664 has 60 divisors (see below), whose sum is σ = 3015463248. Its totient is φ = 477825600.

The previous prime is 1226427619. The next prime is 1226427691. The reversal of 1226427664 is 4667246221.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62482 + ... + 79729.

Almost surely, 2^1226427664 is an apocalyptic number.

1226427664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1226427664 is an abundant number, since it is smaller than the sum of its proper divisors (1789035584).

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

1226427664 is a wasteful number, since it uses less digits than its factorization.

1226427664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142244 (or 142231 counting only the distinct ones).

The product of its digits is 193536, while the sum is 40.

The square root of 1226427664 is about 35020.3892611147. The cubic root of 1226427664 is about 1070.4029879270.

The spelling of 1226427664 in words is "one billion, two hundred twenty-six million, four hundred twenty-seven thousand, six hundred sixty-four".