7003681 has 4 divisors (see below), whose sum is σ = 7009200. Its totient is φ = 6998164.

The previous prime is 7003679. The next prime is 7003687. The reversal of 7003681 is 1863007.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7003681 - 2¹ = 7003679 is a prime.

It is a super-2 number, since 2×7003681² = 98103095099522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7003687) 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, 210 + ... + 3748.

It is an arithmetic number, because the mean of its divisors is an integer number (1752300).

Almost surely, 2^7003681 is an apocalyptic number.

It is an amenable number.

7003681 is a deficient number, since it is larger than the sum of its proper divisors (5519).

7003681 is a wasteful number, since it uses less digits than its factorization.

7003681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5518.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 7003681 is about 2646.4468632489. The cubic root of 7003681 is about 191.3266433523.

Adding to 7003681 its reverse (1863007), we get a palindrome (8866688).

The spelling of 7003681 in words is "seven million, three thousand, six hundred eighty-one".