7681005 has 12 divisors (see below), whose sum is σ = 13313820. Its totient is φ = 4096512.

The previous prime is 7680989. The next prime is 7681007. The reversal of 7681005 is 5001867.

It can be written as a sum of positive squares in 2 ways, for example, as 5076009 + 2604996 = 2253^2 + 1614^2 .

It is not a de Polignac number, because 7681005 - 2⁴ = 7680989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7681005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7681007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85300 + ... + 85389.

It is an arithmetic number, because the mean of its divisors is an integer number (1109485).

Almost surely, 2^7681005 is an apocalyptic number.

It is an amenable number.

7681005 is a deficient number, since it is larger than the sum of its proper divisors (5632815).

7681005 is a wasteful number, since it uses less digits than its factorization.

7681005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170700 (or 170697 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 7681005 is about 2771.4626102475. The cubic root of 7681005 is about 197.3055716236.

The spelling of 7681005 in words is "seven million, six hundred eighty-one thousand, five".