1226040664 has 16 divisors (see below), whose sum is σ = 2419817400. Its totient is φ = 580756032.

The previous prime is 1226040661. The next prime is 1226040667. The reversal of 1226040664 is 4660406221.

It is an interprime number because it is at equal distance from previous prime (1226040661) and next prime (1226040667).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226040661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4032877 + ... + 4033180.

Almost surely, 2^1226040664 is an apocalyptic number.

It is an amenable number.

1226040664 is a deficient number, since it is larger than the sum of its proper divisors (1193776736).

1226040664 is a wasteful number, since it uses less digits than its factorization.

1226040664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8066082 (or 8066078 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1226040664 is about 35014.8634725312. The cubic root of 1226040664 is about 1070.2903873098.

Adding to 1226040664 its reverse (4660406221), we get a palindrome (5886446885).

The spelling of 1226040664 in words is "one billion, two hundred twenty-six million, forty thousand, six hundred sixty-four".