76061681 has 2 divisors, whose sum is σ = 76061682. Its totient is φ = 76061680.

The previous prime is 76061659. The next prime is 76061717. The reversal of 76061681 is 18616067.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75968656 + 93025 = 8716^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 76061681 - 2¹⁴ = 76045297 is a prime.

It is a super-2 number, since 2×76061681² = 11570758633091522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (76063681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38030840 + 38030841.

It is an arithmetic number, because the mean of its divisors is an integer number (38030841).

Almost surely, 2^76061681 is an apocalyptic number.

It is an amenable number.

76061681 is a deficient number, since it is larger than the sum of its proper divisors (1).

76061681 is an equidigital number, since it uses as much as digits as its factorization.

76061681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 76061681 is about 8721.3348175609. The cubic root of 76061681 is about 423.6969194715.

The spelling of 76061681 in words is "seventy-six million, sixty-one thousand, six hundred eighty-one".