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BaseRepresentation
bin1101101001100
3100120211
41231030
5210423
652204
726242
oct15514
910524
106988
115283
124064
133247
142792
15210d
hex1b4c

6988 has 6 divisors (see below), whose sum is σ = 12236. Its totient is φ = 3492.

The previous prime is 6983. The next prime is 6991. The reversal of 6988 is 8896.

It is not an unprimeable number, because it can be changed into a prime (6983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 870 + ... + 877.

It is an amenable number.

6988 is a deficient number, since it is larger than the sum of its proper divisors (5248).

6988 is a wasteful number, since it uses less digits than its factorization.

6988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751 (or 1749 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 6988 is about 83.5942581760. The cubic root of 6988 is about 19.1183745401.

The spelling of 6988 in words is "six thousand, nine hundred eighty-eight".

Divisors: 1 2 4 1747 3494 6988