1364445666 has 12 divisors (see below), whose sum is σ = 2956298982. Its totient is φ = 454815216.

The previous prime is 1364445617. The next prime is 1364445671. The reversal of 1364445666 is 6665444631.

It can be written as a sum of positive squares in only one way, i.e., 1140075225 + 224370441 = 33765^2 + 14979^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37901251 + ... + 37901286.

Almost surely, 2^1364445666 is an apocalyptic number.

1364445666 is an abundant number, since it is smaller than the sum of its proper divisors (1591853316).

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

1364445666 is a wasteful number, since it uses less digits than its factorization.

1364445666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75802545 (or 75802542 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 45.

The square root of 1364445666 is about 36938.4036742250. The cubic root of 1364445666 is about 1109.1375672483.

The spelling of 1364445666 in words is "one billion, three hundred sixty-four million, four hundred forty-five thousand, six hundred sixty-six".