77880343 has 2 divisors, whose sum is σ = 77880344. Its totient is φ = 77880342.

The previous prime is 77880329. The next prime is 77880371. The reversal of 77880343 is 34308877.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77880343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77880296 and 77880305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77886343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38940171 + 38940172.

It is an arithmetic number, because the mean of its divisors is an integer number (38940172).

Almost surely, 2^77880343 is an apocalyptic number.

77880343 is a deficient number, since it is larger than the sum of its proper divisors (1).

77880343 is an equidigital number, since it uses as much as digits as its factorization.

77880343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 77880343 is about 8824.9840226484. The cubic root of 77880343 is about 427.0472719412.

The spelling of 77880343 in words is "seventy-seven million, eight hundred eighty thousand, three hundred forty-three".