7075681 has 4 divisors (see below), whose sum is σ = 7319700. Its totient is φ = 6831664.

The previous prime is 7075661. The next prime is 7075687. The reversal of 7075681 is 1865707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1865707 = 89 ⋅20963.

It can be written as a sum of positive squares in 2 ways, for example, as 3686400 + 3389281 = 1920^2 + 1841^2 .

It is a cyclic number.

It is not a de Polignac number, because 7075681 - 2¹⁹ = 6551393 is a prime.

It is a super-2 number, since 2×7075681² = 100130523227522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7075687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121966 + ... + 122023.

It is an arithmetic number, because the mean of its divisors is an integer number (1829925).

Almost surely, 2^7075681 is an apocalyptic number.

It is an amenable number.

7075681 is a deficient number, since it is larger than the sum of its proper divisors (244019).

7075681 is a wasteful number, since it uses less digits than its factorization.

7075681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244018.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 7075681 is about 2660.0152255203. The cubic root of 7075681 is about 191.9800416899.

It can be divided in two parts, 70756 and 81, that multiplied together give a square (5731236 = 2394²).

The spelling of 7075681 in words is "seven million, seventy-five thousand, six hundred eighty-one".