76734709 has 2 divisors, whose sum is σ = 76734710. Its totient is φ = 76734708.

The previous prime is 76734701. The next prime is 76734731. The reversal of 76734709 is 90743767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46539684 + 30195025 = 6822^2 + 5495^2 .

It is an emirp because it is prime and its reverse (90743767) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76734709 - 2³ = 76734701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76734701) 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, 38367354 + 38367355.

It is an arithmetic number, because the mean of its divisors is an integer number (38367355).

Almost surely, 2^76734709 is an apocalyptic number.

It is an amenable number.

76734709 is a deficient number, since it is larger than the sum of its proper divisors (1).

76734709 is an equidigital number, since it uses as much as digits as its factorization.

76734709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 43.

The square root of 76734709 is about 8759.8349870303. The cubic root of 76734709 is about 424.9429385906.

The spelling of 76734709 in words is "seventy-six million, seven hundred thirty-four thousand, seven hundred nine".