6990917 has 8 divisors (see below), whose sum is σ = 7433760. Its totient is φ = 6555600.

The previous prime is 6990913. The next prime is 6990923. The reversal of 6990917 is 7190996.

It is a happy number.

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 6990917 - 2² = 6990913 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990911) 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 7 ways as a sum of consecutive naturals, for example, 98 + ... + 3740.

It is an arithmetic number, because the mean of its divisors is an integer number (929220).

Almost surely, 2^6990917 is an apocalyptic number.

It is an amenable number.

6990917 is a deficient number, since it is larger than the sum of its proper divisors (442843).

6990917 is a wasteful number, since it uses less digits than its factorization.

6990917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3763.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 6990917 is about 2644.0342282202. The cubic root of 6990917 is about 191.2103436367.

The spelling of 6990917 in words is "six million, nine hundred ninety thousand, nine hundred seventeen".