966641 has 4 divisors (see below), whose sum is σ = 1041012. Its totient is φ = 892272.

The previous prime is 966631. The next prime is 966653. The reversal of 966641 is 146669.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92416 + 874225 = 304^2 + 935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-966641 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 966598 and 966607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (966631) 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, 37166 + ... + 37191.

It is an arithmetic number, because the mean of its divisors is an integer number (260253).

2⁹⁶⁶⁶⁴¹ is an apocalyptic number.

It is an amenable number.

966641 is a deficient number, since it is larger than the sum of its proper divisors (74371).

966641 is a wasteful number, since it uses less digits than its factorization.

966641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74370.

The product of its digits is 7776, while the sum is 32.

The square root of 966641 is about 983.1790274411. The cubic root of 966641 is about 98.8754342583.

The spelling of 966641 in words is "nine hundred sixty-six thousand, six hundred forty-one".