76061309 has 2 divisors, whose sum is σ = 76061310. Its totient is φ = 76061308.

The previous prime is 76061303. The next prime is 76061329. The reversal of 76061309 is 90316067.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64480900 + 11580409 = 8030^2 + 3403^2 .

It is a cyclic number.

It is not a de Polignac number, because 76061309 - 2²⁰ = 75012733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76061303) 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, 38030654 + 38030655.

It is an arithmetic number, because the mean of its divisors is an integer number (38030655).

Almost surely, 2^76061309 is an apocalyptic number.

It is an amenable number.

76061309 is a deficient number, since it is larger than the sum of its proper divisors (1).

76061309 is an equidigital number, since it uses as much as digits as its factorization.

76061309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 76061309 is about 8721.3134905242. The cubic root of 76061309 is about 423.6962287360.

The spelling of 76061309 in words is "seventy-six million, sixty-one thousand, three hundred nine".