1366662066 has 64 divisors (see below), whose sum is σ = 3415136256. Its totient is φ = 354211200.

The previous prime is 1366662029. The next prime is 1366662071. The reversal of 1366662066 is 6602666631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 31 ways as a sum of consecutive naturals, for example, 229446 + ... + 235326.

It is an arithmetic number, because the mean of its divisors is an integer number (53361504).

Almost surely, 2^1366662066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366662066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1707568128).

1366662066 is an abundant number, since it is smaller than the sum of its proper divisors (2048474190).

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

1366662066 is a wasteful number, since it uses less digits than its factorization.

1366662066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6407.

The product of its (nonzero) digits is 279936, while the sum is 42.

The square root of 1366662066 is about 36968.3927970909. The cubic root of 1366662066 is about 1109.7378018796.

The spelling of 1366662066 in words is "one billion, three hundred sixty-six million, six hundred sixty-two thousand, sixty-six".