6706021 has 16 divisors (see below), whose sum is σ = 7907328. Its totient is φ = 5569200.

The previous prime is 6706019. The next prime is 6706033. The reversal of 6706021 is 1206076.

It is not a de Polignac number, because 6706021 - 2¹ = 6706019 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6705983 and 6706001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6706081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51126 + ... + 51256.

It is an arithmetic number, because the mean of its divisors is an integer number (494208).

Almost surely, 2^6706021 is an apocalyptic number.

It is an amenable number.

6706021 is a deficient number, since it is larger than the sum of its proper divisors (1201307).

6706021 is a wasteful number, since it uses less digits than its factorization.

6706021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312.

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

The square root of 6706021 is about 2589.5986175467. The cubic root of 6706021 is about 188.5768178911.

Subtracting from 6706021 its reverse (1206076), we obtain a palindrome (5499945).

It can be divided in two parts, 67060 and 21, that added together give a square (67081 = 259²).

The spelling of 6706021 in words is "six million, seven hundred six thousand, twenty-one".