7946681 has 2 divisors, whose sum is σ = 7946682. Its totient is φ = 7946680.

The previous prime is 7946671. The next prime is 7946683. The reversal of 7946681 is 1866497.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7376656 + 570025 = 2716^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 7946681 - 2¹⁴ = 7930297 is a prime.

It is a super-2 number, since 2×7946681² = 126299477831522, which contains 22 as substring.

Together with 7946683, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7946683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3973340 + 3973341.

It is an arithmetic number, because the mean of its divisors is an integer number (3973341).

Almost surely, 2^7946681 is an apocalyptic number.

It is an amenable number.

7946681 is a deficient number, since it is larger than the sum of its proper divisors (1).

7946681 is an equidigital number, since it uses as much as digits as its factorization.

7946681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 7946681 is about 2818.9858105354. The cubic root of 7946681 is about 199.5546842051.

The spelling of 7946681 in words is "seven million, nine hundred forty-six thousand, six hundred eighty-one".