76682681 has 2 divisors, whose sum is σ = 76682682. Its totient is φ = 76682680.

The previous prime is 76682677. The next prime is 76682719. The reversal of 76682681 is 18628667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75968656 + 714025 = 8716^2 + 845^2 .

It is a cyclic number.

It is not a de Polignac number, because 76682681 - 2² = 76682677 is a prime.

It is a super-2 number, since 2×76682681² = 11760467130695522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (76682381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38341340 + 38341341.

It is an arithmetic number, because the mean of its divisors is an integer number (38341341).

Almost surely, 2^76682681 is an apocalyptic number.

It is an amenable number.

76682681 is a deficient number, since it is larger than the sum of its proper divisors (1).

76682681 is an equidigital number, since it uses as much as digits as its factorization.

76682681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 76682681 is about 8756.8647928354. The cubic root of 76682681 is about 424.8468763254.

The spelling of 76682681 in words is "seventy-six million, six hundred eighty-two thousand, six hundred eighty-one".