1333066561 has 8 divisors (see below), whose sum is σ = 1342238144. Its totient is φ = 1323922320.

The previous prime is 1333066541. The next prime is 1333066597. The reversal of 1333066561 is 1656603331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1333066561 - 2²⁵ = 1299512129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1333066541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96271 + ... + 109243.

It is an arithmetic number, because the mean of its divisors is an integer number (167779768).

Almost surely, 2^1333066561 is an apocalyptic number.

It is an amenable number.

1333066561 is a deficient number, since it is larger than the sum of its proper divisors (9171583).

1333066561 is a wasteful number, since it uses less digits than its factorization.

1333066561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13671.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 1333066561 is about 36511.1840536568. The cubic root of 1333066561 is about 1100.5690061657.

Adding to 1333066561 its reverse (1656603331), we get a palindrome (2989669892).

The spelling of 1333066561 in words is "one billion, three hundred thirty-three million, sixty-six thousand, five hundred sixty-one".