6990017 has 2 divisors, whose sum is σ = 6990018. Its totient is φ = 6990016.

The previous prime is 6990001. The next prime is 6990019. The reversal of 6990017 is 7100996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4426816 + 2563201 = 2104^2 + 1601^2 .

It is a cyclic number.

It is not a de Polignac number, because 6990017 - 2⁴ = 6990001 is a prime.

Together with 6990019, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (6990019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3495008 + 3495009.

It is an arithmetic number, because the mean of its divisors is an integer number (3495009).

Almost surely, 2^6990017 is an apocalyptic number.

It is an amenable number.

6990017 is a deficient number, since it is larger than the sum of its proper divisors (1).

6990017 is an equidigital number, since it uses as much as digits as its factorization.

6990017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 6990017 is about 2643.8640282738. The cubic root of 6990017 is about 191.2021379084.

The spelling of 6990017 in words is "six million, nine hundred ninety thousand, seventeen".