6990722 has 8 divisors (see below), whose sum is σ = 10658172. Its totient is φ = 3438000.

The previous prime is 6990721. The next prime is 6990749. The reversal of 6990722 is 2270996.

It can be written as a sum of positive squares in 2 ways, for example, as 5480281 + 1510441 = 2341^2 + 1229^2 .

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

It is not an unprimeable number, because it can be changed into a prime (6990721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28529 + ... + 28772.

Almost surely, 2^6990722 is an apocalyptic number.

6990722 is a deficient number, since it is larger than the sum of its proper divisors (3667450).

6990722 is a wasteful number, since it uses less digits than its factorization.

6990722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57364.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 6990722 is about 2643.9973524949. The cubic root of 6990722 is about 191.2085657886.

The spelling of 6990722 in words is "six million, nine hundred ninety thousand, seven hundred twenty-two".