6685387 has 4 divisors (see below), whose sum is σ = 6976080. Its totient is φ = 6394696.

The previous prime is 6685379. The next prime is 6685391. The reversal of 6685387 is 7835866.

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 6685387 - 2³ = 6685379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6685307) 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, 145312 + ... + 145357.

It is an arithmetic number, because the mean of its divisors is an integer number (1744020).

Almost surely, 2^6685387 is an apocalyptic number.

6685387 is a deficient number, since it is larger than the sum of its proper divisors (290693).

6685387 is a wasteful number, since it uses less digits than its factorization.

6685387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290692.

The product of its digits is 241920, while the sum is 43.

The square root of 6685387 is about 2585.6115330807. The cubic root of 6685387 is about 188.3832062209.

The spelling of 6685387 in words is "six million, six hundred eighty-five thousand, three hundred eighty-seven".