964561 has 4 divisors (see below), whose sum is σ = 1038772. Its totient is φ = 890352.

The previous prime is 964559. The next prime is 964571. The reversal of 964561 is 165469.

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 50625 + 913936 = 225^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 964561 - 2¹ = 964559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (964501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37086 + ... + 37111.

It is an arithmetic number, because the mean of its divisors is an integer number (259693).

2⁹⁶⁴⁵⁶¹ is an apocalyptic number.

It is an amenable number.

964561 is a deficient number, since it is larger than the sum of its proper divisors (74211).

964561 is a wasteful number, since it uses less digits than its factorization.

964561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74210.

The product of its digits is 6480, while the sum is 31.

The square root of 964561 is about 982.1206646843. The cubic root of 964561 is about 98.8044638938.

The spelling of 964561 in words is "nine hundred sixty-four thousand, five hundred sixty-one".