77347313 has 2 divisors, whose sum is σ = 77347314. Its totient is φ = 77347312.

The previous prime is 77347301. The next prime is 77347339. The reversal of 77347313 is 31374377.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65739664 + 11607649 = 8108^2 + 3407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77347313 is a prime.

It is not a weakly prime, because it can be changed into another prime (77347343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38673656 + 38673657.

It is an arithmetic number, because the mean of its divisors is an integer number (38673657).

Almost surely, 2^77347313 is an apocalyptic number.

It is an amenable number.

77347313 is a deficient number, since it is larger than the sum of its proper divisors (1).

77347313 is an equidigital number, since it uses as much as digits as its factorization.

77347313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37044, while the sum is 35.

The square root of 77347313 is about 8794.7321164433. The cubic root of 77347313 is about 426.0707726246.

The spelling of 77347313 in words is "seventy-seven million, three hundred forty-seven thousand, three hundred thirteen".