76699729 has 2 divisors, whose sum is σ = 76699730. Its totient is φ = 76699728.

The previous prime is 76699717. The next prime is 76699739. The reversal of 76699729 is 92799667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76527504 + 172225 = 8748^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 76699729 - 2¹⁹ = 76175441 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76699729.

It is not a weakly prime, because it can be changed into another prime (76699709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38349864 + 38349865.

It is an arithmetic number, because the mean of its divisors is an integer number (38349865).

Almost surely, 2^76699729 is an apocalyptic number.

It is an amenable number.

76699729 is a deficient number, since it is larger than the sum of its proper divisors (1).

76699729 is an equidigital number, since it uses as much as digits as its factorization.

76699729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2571912, while the sum is 55.

The square root of 76699729 is about 8757.8381464834. The cubic root of 76699729 is about 424.8783578055.

The spelling of 76699729 in words is "seventy-six million, six hundred ninety-nine thousand, seven hundred twenty-nine".