76745729 has 2 divisors, whose sum is σ = 76745730. Its totient is φ = 76745728.

The previous prime is 76745707. The next prime is 76745789. The reversal of 76745729 is 92754767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76597504 + 148225 = 8752^2 + 385^2 .

It is a cyclic number.

It is not a de Polignac number, because 76745729 - 2¹² = 76741633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76745789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38372864 + 38372865.

It is an arithmetic number, because the mean of its divisors is an integer number (38372865).

Almost surely, 2^76745729 is an apocalyptic number.

It is an amenable number.

76745729 is a deficient number, since it is larger than the sum of its proper divisors (1).

76745729 is an equidigital number, since it uses as much as digits as its factorization.

76745729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 740880, while the sum is 47.

The square root of 76745729 is about 8760.4639717312. The cubic root of 76745729 is about 424.9632798724.

The spelling of 76745729 in words is "seventy-six million, seven hundred forty-five thousand, seven hundred twenty-nine".