966661533 has 12 divisors (see below), whose sum is σ = 1448003648. Its totient is φ = 644440860.

The previous prime is 966661523. The next prime is 966661573. The reversal of 966661533 is 335166669.

It is not a de Polignac number, because 966661533 - 2¹² = 966657437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (966661523) by changing a digit.

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, 1988773 + ... + 1989258.

Almost surely, 2^966661533 is an apocalyptic number.

It is an amenable number.

966661533 is a deficient number, since it is larger than the sum of its proper divisors (481342115).

966661533 is an equidigital number, since it uses as much as digits as its factorization.

966661533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3978046 (or 3978034 counting only the distinct ones).

The product of its digits is 524880, while the sum is 45.

The square root of 966661533 is about 31091.1809521607. The cubic root of 966661533 is about 988.7613434406.

The spelling of 966661533 in words is "nine hundred sixty-six million, six hundred sixty-one thousand, five hundred thirty-three".