7680681 has 12 divisors (see below), whose sum is σ = 11160708. Its totient is φ = 5089824.

The previous prime is 7680677. The next prime is 7680691. The reversal of 7680681 is 1860867.

7680681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4928400 + 2752281 = 2220^2 + 1659^2 .

It is not a de Polignac number, because 7680681 - 2² = 7680677 is a prime.

It is a super-2 number, since 2×7680681² = 117985721247522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

7680681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7680671) 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, 910 + ... + 4023.

It is an arithmetic number, because the mean of its divisors is an integer number (930059).

Almost surely, 2^7680681 is an apocalyptic number.

It is an amenable number.

7680681 is a deficient number, since it is larger than the sum of its proper divisors (3480027).

7680681 is a wasteful number, since it uses less digits than its factorization.

7680681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112 (or 5109 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 7680681 is about 2771.4041567408. The cubic root of 7680681 is about 197.3027973380.

The spelling of 7680681 in words is "seven million, six hundred eighty thousand, six hundred eighty-one".