6687948 has 12 divisors (see below), whose sum is σ = 15605240. Its totient is φ = 2229312.

The previous prime is 6687931. The next prime is 6687973. The reversal of 6687948 is 8497866.

It is a tau number, because it is divible by the number of its divisors (12).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 6687897 and 6687906.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278653 + ... + 278676.

Almost surely, 2^6687948 is an apocalyptic number.

It is an amenable number.

6687948 is an abundant number, since it is smaller than the sum of its proper divisors (8917292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6687948 is a wasteful number, since it uses less digits than its factorization.

6687948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557336 (or 557334 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 6687948 is about 2586.1067263359. The cubic root of 6687948 is about 188.4072580721.

The spelling of 6687948 in words is "six million, six hundred eighty-seven thousand, nine hundred forty-eight".