6685560 has 144 divisors (see below), whose sum is σ = 25342200. Its totient is φ = 1524096.

The previous prime is 6685543. The next prime is 6685577. The reversal of 6685560 is 655866.

It is an interprime number because it is at equal distance from previous prime (6685543) and next prime (6685577).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17451 + ... + 17829.

Almost surely, 2^6685560 is an apocalyptic number.

6685560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6685560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12671100).

6685560 is an abundant number, since it is smaller than the sum of its proper divisors (18656640).

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

6685560 is a wasteful number, since it uses less digits than its factorization.

6685560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 6685560 is about 2585.6449872324. The cubic root of 6685560 is about 188.3848311587.

The spelling of 6685560 in words is "six million, six hundred eighty-five thousand, five hundred sixty".