968421 has 4 divisors (see below), whose sum is σ = 1291232. Its totient is φ = 645612.

The previous prime is 968419. The next prime is 968423. The reversal of 968421 is 124869.

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 an interprime number because it is at equal distance from previous prime (968419) and next prime (968423).

It is not a de Polignac number, because 968421 - 2¹ = 968419 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (968423) 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, 161401 + ... + 161406.

It is an arithmetic number, because the mean of its divisors is an integer number (322808).

2⁹⁶⁸⁴²¹ is an apocalyptic number.

It is an amenable number.

968421 is a deficient number, since it is larger than the sum of its proper divisors (322811).

968421 is a wasteful number, since it uses less digits than its factorization.

968421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322810.

The product of its digits is 3456, while the sum is 30.

The square root of 968421 is about 984.0838378919. The cubic root of 968421 is about 98.9360877149.

The spelling of 968421 in words is "nine hundred sixty-eight thousand, four hundred twenty-one".