1366664634 has 24 divisors (see below), whose sum is σ = 3041138100. Its totient is φ = 443242368.

The previous prime is 1366664617. The next prime is 1366664641. The reversal of 1366664634 is 4364666631.

It can be written as a sum of positive squares in 2 ways, for example, as 1232220609 + 134444025 = 35103^2 + 11595^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1366664634.

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 11 ways as a sum of consecutive naturals, for example, 1025359 + ... + 1026690.

Almost surely, 2^1366664634 is an apocalyptic number.

1366664634 is an abundant number, since it is smaller than the sum of its proper divisors (1674473466).

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

1366664634 is a wasteful number, since it uses less digits than its factorization.

1366664634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052094 (or 2052091 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 45.

The square root of 1366664634 is about 36968.4275294473. The cubic root of 1366664634 is about 1109.7384969563.

The spelling of 1366664634 in words is "one billion, three hundred sixty-six million, six hundred sixty-four thousand, six hundred thirty-four".