6722215 has 8 divisors (see below), whose sum is σ = 8083440. Its totient is φ = 5366592.

The previous prime is 6722207. The next prime is 6722239. The reversal of 6722215 is 5122276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6722215 - 2³ = 6722207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6722215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996 + ... + 4174.

It is an arithmetic number, because the mean of its divisors is an integer number (1010430).

Almost surely, 2^6722215 is an apocalyptic number.

6722215 is a deficient number, since it is larger than the sum of its proper divisors (1361225).

6722215 is a wasteful number, since it uses less digits than its factorization.

6722215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801.

The product of its digits is 1680, while the sum is 25.

The square root of 6722215 is about 2592.7234715642. The cubic root of 6722215 is about 188.7284904513.

The spelling of 6722215 in words is "six million, seven hundred twenty-two thousand, two hundred fifteen".