76868657 has 2 divisors, whose sum is σ = 76868658. Its totient is φ = 76868656.

The previous prime is 76868581. The next prime is 76868663. The reversal of 76868657 is 75686867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49505296 + 27363361 = 7036^2 + 5231^2 .

It is a cyclic number.

It is not a de Polignac number, because 76868657 - 2¹⁶ = 76803121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76868599 and 76868608.

It is not a weakly prime, because it can be changed into another prime (76868557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38434328 + 38434329.

It is an arithmetic number, because the mean of its divisors is an integer number (38434329).

Almost surely, 2^76868657 is an apocalyptic number.

It is an amenable number.

76868657 is a deficient number, since it is larger than the sum of its proper divisors (1).

76868657 is an equidigital number, since it uses as much as digits as its factorization.

76868657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 53.

The square root of 76868657 is about 8767.4772312222. The cubic root of 76868657 is about 425.1900547895.

The spelling of 76868657 in words is "seventy-six million, eight hundred sixty-eight thousand, six hundred fifty-seven".