966844821 has 32 divisors (see below), whose sum is σ = 1343462400. Its totient is φ = 618048000.

The previous prime is 966844789. The next prime is 966844841. The reversal of 966844821 is 128448669.

It is not a de Polignac number, because 966844821 - 2⁵ = 966844789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (966844841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2770155 + ... + 2770503.

It is an arithmetic number, because the mean of its divisors is an integer number (41983200).

Almost surely, 2^966844821 is an apocalyptic number.

It is an amenable number.

966844821 is a deficient number, since it is larger than the sum of its proper divisors (376617579).

966844821 is a wasteful number, since it uses less digits than its factorization.

966844821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717.

The product of its digits is 663552, while the sum is 48.

The square root of 966844821 is about 31094.1284007126. The cubic root of 966844821 is about 988.8238322677.

The spelling of 966844821 in words is "nine hundred sixty-six million, eight hundred forty-four thousand, eight hundred twenty-one".