7040681 has 4 divisors (see below), whose sum is σ = 7156164. Its totient is φ = 6925200.

The previous prime is 7040653. The next prime is 7040687. The reversal of 7040681 is 1860407.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1357225 + 5683456 = 1165^2 + 2384^2 .

It is a cyclic number.

It is not a de Polignac number, because 7040681 - 2²² = 2846377 is a prime.

It is a super-2 number, since 2×7040681² = 99142377887522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7040681.

It is not an unprimeable number, because it can be changed into a prime (7040687) 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, 57650 + ... + 57771.

It is an arithmetic number, because the mean of its divisors is an integer number (1789041).

Almost surely, 2^7040681 is an apocalyptic number.

It is an amenable number.

7040681 is a deficient number, since it is larger than the sum of its proper divisors (115483).

7040681 is a wasteful number, since it uses less digits than its factorization.

7040681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115482.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 7040681 is about 2653.4281599471. The cubic root of 7040681 is about 191.6629739259.

The spelling of 7040681 in words is "seven million, forty thousand, six hundred eighty-one".