6985145 has 4 divisors (see below), whose sum is σ = 8382180. Its totient is φ = 5588112.

The previous prime is 6985133. The next prime is 6985157. The reversal of 6985145 is 5415896.

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 (6985133) and next prime (6985157).

It can be written as a sum of positive squares in 2 ways, for example, as 4108729 + 2876416 = 2027^2 + 1696^2 .

It is a cyclic number.

It is not a de Polignac number, because 6985145 - 2⁶ = 6985081 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6985099 and 6985108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698510 + ... + 698519.

It is an arithmetic number, because the mean of its divisors is an integer number (2095545).

Almost surely, 2^6985145 is an apocalyptic number.

It is an amenable number.

6985145 is a deficient number, since it is larger than the sum of its proper divisors (1397035).

6985145 is a wasteful number, since it uses less digits than its factorization.

6985145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397034.

The product of its digits is 43200, while the sum is 38.

The square root of 6985145 is about 2642.9424889694. The cubic root of 6985145 is about 191.1577053353.

It can be divided in two parts, 69851 and 45, that added together give a palindrome (69896).

The spelling of 6985145 in words is "six million, nine hundred eighty-five thousand, one hundred forty-five".