6988617 has 6 divisors (see below), whose sum is σ = 10094682. Its totient is φ = 4659072.

The previous prime is 6988607. The next prime is 6988621. The reversal of 6988617 is 7168896.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6843456 + 145161 = 2616^2 + 381^2 .

It is not a de Polignac number, because 6988617 - 2¹⁰ = 6987593 is a prime.

It is a super-3 number, since 3×6988617³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6988607) 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 5 ways as a sum of consecutive naturals, for example, 388248 + ... + 388265.

It is an arithmetic number, because the mean of its divisors is an integer number (1682447).

Almost surely, 2^6988617 is an apocalyptic number.

It is an amenable number.

6988617 is a deficient number, since it is larger than the sum of its proper divisors (3106065).

6988617 is a wasteful number, since it uses less digits than its factorization.

6988617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776519 (or 776516 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 6988617 is about 2643.5992510212. The cubic root of 6988617 is about 191.1893720422.

The spelling of 6988617 in words is "six million, nine hundred eighty-eight thousand, six hundred seventeen".