965021 has 4 divisors (see below), whose sum is σ = 967200. Its totient is φ = 962844.

The previous prime is 964981. The next prime is 965023. The reversal of 965021 is 120569.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-965021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (965023) 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, 161 + ... + 1398.

It is an arithmetic number, because the mean of its divisors is an integer number (241800).

2⁹⁶⁵⁰²¹ is an apocalyptic number.

It is an amenable number.

965021 is a deficient number, since it is larger than the sum of its proper divisors (2179).

965021 is a wasteful number, since it uses less digits than its factorization.

965021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 965021 is about 982.3548238798. The cubic root of 965021 is about 98.8201680432.

The spelling of 965021 in words is "nine hundred sixty-five thousand, twenty-one".