6985257 has 8 divisors (see below), whose sum is σ = 9335040. Its totient is φ = 4646160.

The previous prime is 6985247. The next prime is 6985271. The reversal of 6985257 is 7525896.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6985257 - 2⁸ = 6985001 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6985247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 994 + ... + 3867.

It is an arithmetic number, because the mean of its divisors is an integer number (1166880).

Almost surely, 2^6985257 is an apocalyptic number.

It is an amenable number.

6985257 is a deficient number, since it is larger than the sum of its proper divisors (2349783).

6985257 is a wasteful number, since it uses less digits than its factorization.

6985257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5343.

The product of its digits is 151200, while the sum is 42.

The square root of 6985257 is about 2642.9636773895. The cubic root of 6985257 is about 191.1587270057.

The spelling of 6985257 in words is "six million, nine hundred eighty-five thousand, two hundred fifty-seven".