7563681 has 12 divisors (see below), whose sum is σ = 10962640. Its totient is φ = 5025240.

The previous prime is 7563679. The next prime is 7563709. The reversal of 7563681 is 1863657.

It is not a de Polignac number, because 7563681 - 2¹ = 7563679 is a prime.

It is a super-2 number, since 2×7563681² = 114418540539522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7563601) 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, 1710 + ... + 4248.

Almost surely, 2^7563681 is an apocalyptic number.

It is an amenable number.

7563681 is a deficient number, since it is larger than the sum of its proper divisors (3398959).

7563681 is a wasteful number, since it uses less digits than its factorization.

7563681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876 (or 2873 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 7563681 is about 2750.2147188901. The cubic root of 7563681 is about 196.2958273980.

The spelling of 7563681 in words is "seven million, five hundred sixty-three thousand, six hundred eighty-one".