6698985 has 16 divisors (see below), whose sum is σ = 10777536. Its totient is φ = 3553088.

The previous prime is 6698981. The next prime is 6698987. The reversal of 6698985 is 5898966.

It is a cyclic number.

It is not a de Polignac number, because 6698985 - 2² = 6698981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6698981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1822 + ... + 4088.

It is an arithmetic number, because the mean of its divisors is an integer number (673596).

Almost surely, 2^6698985 is an apocalyptic number.

It is an amenable number.

6698985 is a deficient number, since it is larger than the sum of its proper divisors (4078551).

6698985 is a wasteful number, since it uses less digits than its factorization.

6698985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472.

The product of its digits is 933120, while the sum is 51.

The square root of 6698985 is about 2588.2397493277. The cubic root of 6698985 is about 188.5108428120.

It can be divided in two parts, 669898 and 5, that added together give a triangular number (669903 = T₁₁₅₇).

The spelling of 6698985 in words is "six million, six hundred ninety-eight thousand, nine hundred eighty-five".