6685523 has 4 divisors (see below), whose sum is σ = 7199808. Its totient is φ = 6171240.

The previous prime is 6685519. The next prime is 6685529. The reversal of 6685523 is 3255866.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6685523 - 2² = 6685519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6685529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257123 + ... + 257148.

It is an arithmetic number, because the mean of its divisors is an integer number (1799952).

Almost surely, 2^6685523 is an apocalyptic number.

6685523 is a deficient number, since it is larger than the sum of its proper divisors (514285).

6685523 is a wasteful number, since it uses less digits than its factorization.

6685523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514284.

The product of its digits is 43200, while the sum is 35.

The square root of 6685523 is about 2585.6378323346. The cubic root of 6685523 is about 188.3844836310.

The spelling of 6685523 in words is "six million, six hundred eighty-five thousand, five hundred twenty-three".