1356006666 has 64 divisors (see below), whose sum is σ = 3291079680. Its totient is φ = 363605760.

The previous prime is 1356006661. The next prime is 1356006671. The reversal of 1356006666 is 6666006531.

It is an interprime number because it is at equal distance from previous prime (1356006661) and next prime (1356006671).

It is not an unprimeable number, because it can be changed into a prime (1356006661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268101 + ... + 273111.

It is an arithmetic number, because the mean of its divisors is an integer number (51423120).

Almost surely, 2^1356006666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1356006666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1645539840).

1356006666 is an abundant number, since it is smaller than the sum of its proper divisors (1935073014).

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

1356006666 is a wasteful number, since it uses less digits than its factorization.

1356006666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5419.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 1356006666 is about 36823.9957907884. The cubic root of 1356006666 is about 1106.8461909167.

The spelling of 1356006666 in words is "one billion, three hundred fifty-six million, six thousand, six hundred sixty-six".