676021 has 4 divisors (see below), whose sum is σ = 681472. Its totient is φ = 670572.

The previous prime is 676009. The next prime is 676031. The reversal of 676021 is 120676.

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 676021 - 2¹³ = 667829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 675983 and 676001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676031) 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, 2535 + ... + 2788.

It is an arithmetic number, because the mean of its divisors is an integer number (170368).

2⁶⁷⁶⁰²¹ is an apocalyptic number.

It is an amenable number.

676021 is a deficient number, since it is larger than the sum of its proper divisors (5451).

676021 is a wasteful number, since it uses less digits than its factorization.

676021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 676021 is about 822.2049622813. The cubic root of 676021 is about 87.7647383409.

Adding to 676021 its reverse (120676), we get a palindrome (796697).

The spelling of 676021 in words is "six hundred seventy-six thousand, twenty-one".