7982785 has 8 divisors (see below), whose sum is σ = 9613800. Its totient is φ = 6363264.

The previous prime is 7982783. The next prime is 7982789. The reversal of 7982785 is 5872897.

It can be written as a sum of positive squares in 4 ways, for example, as 1034289 + 6948496 = 1017^2 + 2636^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7982785 - 2¹ = 7982783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7982783) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1260 + ... + 4189.

It is an arithmetic number, because the mean of its divisors is an integer number (1201725).

Almost surely, 2^7982785 is an apocalyptic number.

It is an amenable number.

7982785 is a deficient number, since it is larger than the sum of its proper divisors (1631015).

7982785 is a wasteful number, since it uses less digits than its factorization.

7982785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747.

The product of its digits is 282240, while the sum is 46.

The square root of 7982785 is about 2825.3822750205. The cubic root of 7982785 is about 199.8564386420.

The spelling of 7982785 in words is "seven million, nine hundred eighty-two thousand, seven hundred eighty-five".