964661 has 2 divisors, whose sum is σ = 964662. Its totient is φ = 964660.

The previous prime is 964637. The next prime is 964679. The reversal of 964661 is 166469.

964661 = 694² + 695².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483025 + 481636 = 695^2 + 694^2 .

It is a cyclic number.

It is not a de Polignac number, because 964661 - 2¹⁸ = 702517 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 964661.

It is not a weakly prime, because it can be changed into another prime (964261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482330 + 482331.

It is an arithmetic number, because the mean of its divisors is an integer number (482331).

2⁹⁶⁴⁶⁶¹ is an apocalyptic number.

964661 is the 695-th centered square number.

It is an amenable number.

964661 is a deficient number, since it is larger than the sum of its proper divisors (1).

964661 is an equidigital number, since it uses as much as digits as its factorization.

964661 is an odious number, because the sum of its binary digits is odd.

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

The square root of 964661 is about 982.1715736062. The cubic root of 964661 is about 98.8078782640.

The spelling of 964661 in words is "nine hundred sixty-four thousand, six hundred sixty-one".