7646681 has 8 divisors (see below), whose sum is σ = 8904384. Its totient is φ = 6430320.

The previous prime is 7646671. The next prime is 7646687. The reversal of 7646681 is 1866467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7646681 is a prime.

It is a super-2 number, since 2×7646681² = 116943460631522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7646687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9935 + ... + 10676.

It is an arithmetic number, because the mean of its divisors is an integer number (1113048).

Almost surely, 2^7646681 is an apocalyptic number.

It is an amenable number.

7646681 is a deficient number, since it is larger than the sum of its proper divisors (1257703).

7646681 is a wasteful number, since it uses less digits than its factorization.

7646681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20671.

The product of its digits is 48384, while the sum is 38.

The square root of 7646681 is about 2765.2632786048. The cubic root of 7646681 is about 197.0112338668.

The spelling of 7646681 in words is "seven million, six hundred forty-six thousand, six hundred eighty-one".