6715985 has 4 divisors (see below), whose sum is σ = 8059188. Its totient is φ = 5372784.

The previous prime is 6715979. The next prime is 6715991. The reversal of 6715985 is 5895176.

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

It is an interprime number because it is at equal distance from previous prime (6715979) and next prime (6715991).

It can be written as a sum of positive squares in 2 ways, for example, as 2289169 + 4426816 = 1513^2 + 2104^2 .

It is a cyclic number.

It is not a de Polignac number, because 6715985 - 2⁶ = 6715921 is a prime.

It is a Duffinian number.

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, 671594 + ... + 671603.

It is an arithmetic number, because the mean of its divisors is an integer number (2014797).

Almost surely, 2^6715985 is an apocalyptic number.

It is an amenable number.

6715985 is a deficient number, since it is larger than the sum of its proper divisors (1343203).

6715985 is a wasteful number, since it uses less digits than its factorization.

6715985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343202.

The product of its digits is 75600, while the sum is 41.

The square root of 6715985 is about 2591.5217537192. The cubic root of 6715985 is about 188.6701693021.

The spelling of 6715985 in words is "six million, seven hundred fifteen thousand, nine hundred eighty-five".