680048771 has 2 divisors, whose sum is σ = 680048772. Its totient is φ = 680048770.

The previous prime is 680048737. The next prime is 680048819. The reversal of 680048771 is 177840086.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680048771 is a prime.

It is a super-2 number, since 2×680048771² = 924932661877220882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (680048731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340024385 + 340024386.

It is an arithmetic number, because the mean of its divisors is an integer number (340024386).

Almost surely, 2^680048771 is an apocalyptic number.

680048771 is a deficient number, since it is larger than the sum of its proper divisors (1).

680048771 is an equidigital number, since it uses as much as digits as its factorization.

680048771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 680048771 is about 26077.7447452804. The cubic root of 680048771 is about 879.3869572408.

The spelling of 680048771 in words is "six hundred eighty million, forty-eight thousand, seven hundred seventy-one".