966215057 has 4 divisors (see below), whose sum is σ = 969703476. Its totient is φ = 962726640.

The previous prime is 966215039. The next prime is 966215123. The reversal of 966215057 is 750512669.

966215057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 31084²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 750512669 = 43 ⋅17453783.

It can be written as a sum of positive squares in 2 ways, for example, as 166513216 + 799701841 = 12904^2 + 28279^2 .

It is a cyclic number.

It is not a de Polignac number, because 966215057 - 2¹⁶ = 966149521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (966215857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1743794 + ... + 1744347.

It is an arithmetic number, because the mean of its divisors is an integer number (242425869).

Almost surely, 2^966215057 is an apocalyptic number.

It is an amenable number.

966215057 is a deficient number, since it is larger than the sum of its proper divisors (3488419).

966215057 is a wasteful number, since it uses less digits than its factorization.

966215057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3488418.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 966215057 is about 31084.0000160854. Note that the first 4 decimals coincide. The cubic root of 966215057 is about 988.6090922206.

The spelling of 966215057 in words is "nine hundred sixty-six million, two hundred fifteen thousand, fifty-seven".