7890506 has 16 divisors (see below), whose sum is σ = 12834024. Its totient is φ = 3616704.

The previous prime is 7890503. The next prime is 7890511. The reversal of 7890506 is 6050987.

It can be written as a sum of positive squares in 4 ways, for example, as 5359225 + 2531281 = 2315^2 + 1591^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7890503) 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, 3116 + ... + 5048.

Almost surely, 2^7890506 is an apocalyptic number.

7890506 is a deficient number, since it is larger than the sum of its proper divisors (4943518).

7890506 is a wasteful number, since it uses less digits than its factorization.

7890506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 7890506 is about 2809.0044499787. The cubic root of 7890506 is about 199.0833552302.

The spelling of 7890506 in words is "seven million, eight hundred ninety thousand, five hundred six".