965643 has 12 divisors (see below), whose sum is σ = 1497960. Its totient is φ = 551712.

The previous prime is 965639. The next prime is 965647. The reversal of 965643 is 346569.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (965639) and next prime (965647).

It is not a de Polignac number, because 965643 - 2² = 965639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (965647) 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 in 11 ways as a sum of consecutive naturals, for example, 3138 + ... + 3431.

It is an arithmetic number, because the mean of its divisors is an integer number (124830).

2⁹⁶⁵⁶⁴³ is an apocalyptic number.

965643 is a deficient number, since it is larger than the sum of its proper divisors (532317).

965643 is a wasteful number, since it uses less digits than its factorization.

965643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6586 (or 6579 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 965643 is about 982.6713591023. The cubic root of 965643 is about 98.8413948501.

The spelling of 965643 in words is "nine hundred sixty-five thousand, six hundred forty-three".