6946221 has 4 divisors (see below), whose sum is σ = 9261632. Its totient is φ = 4630812.

The previous prime is 6946213. The next prime is 6946241. The reversal of 6946221 is 1226496.

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 not a de Polignac number, because 6946221 - 2³ = 6946213 is a prime.

It is a D-number.

It is a Duffinian number.

6946221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6946211) 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, 1157701 + ... + 1157706.

It is an arithmetic number, because the mean of its divisors is an integer number (2315408).

Almost surely, 2^6946221 is an apocalyptic number.

It is an amenable number.

6946221 is a deficient number, since it is larger than the sum of its proper divisors (2315411).

6946221 is a wasteful number, since it uses less digits than its factorization.

6946221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315410.

The product of its digits is 5184, while the sum is 30.

The square root of 6946221 is about 2635.5684396350. The cubic root of 6946221 is about 190.8019748926.

The spelling of 6946221 in words is "six million, nine hundred forty-six thousand, two hundred twenty-one".