7968681 has 12 divisors (see below), whose sum is σ = 13154752. Its totient is φ = 4553496.

The previous prime is 7968679. The next prime is 7968683. The reversal of 7968681 is 1868697.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7968679) and next prime (7968683).

It is not a de Polignac number, because 7968681 - 2¹ = 7968679 is a prime.

It is a super-2 number, since 2×7968681² = 126999753759522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7968683) 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, 63181 + ... + 63306.

Almost surely, 2^7968681 is an apocalyptic number.

It is an amenable number.

7968681 is a deficient number, since it is larger than the sum of its proper divisors (5186071).

7968681 is a wasteful number, since it uses less digits than its factorization.

7968681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126500 (or 126497 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 7968681 is about 2822.8852261472. The cubic root of 7968681 is about 199.7386670074.

It can be divided in two parts, 7968 and 681, that added together give a square (8649 = 93²).

The spelling of 7968681 in words is "seven million, nine hundred sixty-eight thousand, six hundred eighty-one".