966840961 has 4 divisors (see below), whose sum is σ = 966903300. Its totient is φ = 966778624.

The previous prime is 966840929. The next prime is 966840997. The reversal of 966840961 is 169048669.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 169048669 = 1447 ⋅116827.

It can be written as a sum of positive squares in 2 ways, for example, as 378535936 + 588305025 = 19456^2 + 24255^2 .

It is a cyclic number.

It is not a de Polignac number, because 966840961 - 2⁵ = 966840929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (966840661) 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, 12345 + ... + 45673.

It is an arithmetic number, because the mean of its divisors is an integer number (241725825).

Almost surely, 2^966840961 is an apocalyptic number.

It is an amenable number.

966840961 is a deficient number, since it is larger than the sum of its proper divisors (62339).

966840961 is a wasteful number, since it uses less digits than its factorization.

966840961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62338.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 966840961 is about 31094.0663310542. The cubic root of 966840961 is about 988.8225163498.

The spelling of 966840961 in words is "nine hundred sixty-six million, eight hundred forty thousand, nine hundred sixty-one".