6991322 has 8 divisors (see below), whose sum is σ = 11293716. Its totient is φ = 3226752.

The previous prime is 6991319. The next prime is 6991363. The reversal of 6991322 is 2231996.

It can be written as a sum of positive squares in 2 ways, for example, as 6105841 + 885481 = 2471^2 + 941^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134423 + ... + 134474.

Almost surely, 2^6991322 is an apocalyptic number.

6991322 is a deficient number, since it is larger than the sum of its proper divisors (4302394).

6991322 is a wasteful number, since it uses less digits than its factorization.

6991322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268912.

The product of its digits is 5832, while the sum is 32.

The square root of 6991322 is about 2644.1108146218. The cubic root of 6991322 is about 191.2140359846.

The spelling of 6991322 in words is "six million, nine hundred ninety-one thousand, three hundred twenty-two".