706021 has 4 divisors (see below), whose sum is σ = 743200. Its totient is φ = 668844.

The previous prime is 706019. The next prime is 706033. The reversal of 706021 is 120607.

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 not a de Polignac number, because 706021 - 2¹ = 706019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 705986 and 706004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706001) 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 3 ways as a sum of consecutive naturals, for example, 18561 + ... + 18598.

It is an arithmetic number, because the mean of its divisors is an integer number (185800).

2⁷⁰⁶⁰²¹ is an apocalyptic number.

It is an amenable number.

706021 is a deficient number, since it is larger than the sum of its proper divisors (37179).

706021 is a wasteful number, since it uses less digits than its factorization.

706021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37178.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 706021 is about 840.2505578695. The cubic root of 706021 is about 89.0442485017.

Adding to 706021 its reverse (120607), we get a palindrome (826628).

The spelling of 706021 in words is "seven hundred six thousand, twenty-one".