6998617 has 2 divisors, whose sum is σ = 6998618. Its totient is φ = 6998616.

The previous prime is 6998603. The next prime is 6998623. The reversal of 6998617 is 7168996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5470921 + 1527696 = 2339^2 + 1236^2 .

It is a cyclic number.

It is not a de Polignac number, because 6998617 - 2⁷ = 6998489 is a prime.

It is a super-3 number, since 3×6998617³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (6998627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3499308 + 3499309.

It is an arithmetic number, because the mean of its divisors is an integer number (3499309).

Almost surely, 2^6998617 is an apocalyptic number.

It is an amenable number.

6998617 is a deficient number, since it is larger than the sum of its proper divisors (1).

6998617 is an equidigital number, since it uses as much as digits as its factorization.

6998617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 46.

The square root of 6998617 is about 2645.4899357208. The cubic root of 6998617 is about 191.2805194293.

It can be divided in two parts, 699 and 8617, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 6998617 in words is "six million, nine hundred ninety-eight thousand, six hundred seventeen".