105680779 has 2 divisors, whose sum is σ = 105680780. Its totient is φ = 105680778.

The previous prime is 105680761. The next prime is 105680819. The reversal of 105680779 is 977086501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105680779 - 2⁵ = 105680747 is a prime.

It is a super-2 number, since 2×105680779² = 22336854100093682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105680719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52840389 + 52840390.

It is an arithmetic number, because the mean of its divisors is an integer number (52840390).

Almost surely, 2^105680779 is an apocalyptic number.

105680779 is a deficient number, since it is larger than the sum of its proper divisors (1).

105680779 is an equidigital number, since it uses as much as digits as its factorization.

105680779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 105680779 is about 10280.1157094655. The cubic root of 105680779 is about 472.7867919153.

The spelling of 105680779 in words is "one hundred five million, six hundred eighty thousand, seven hundred seventy-nine".