340777 has 2 divisors, whose sum is σ = 340778. Its totient is φ = 340776.

The previous prime is 340757. The next prime is 340787. The reversal of 340777 is 777043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197136 + 143641 = 444^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 340777 - 2⁷ = 340649 is a prime.

It is a super-2 number, since 2×340777² = 232257927458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (340757) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170388 + 170389.

It is an arithmetic number, because the mean of its divisors is an integer number (170389).

2³⁴⁰⁷⁷⁷ is an apocalyptic number.

It is an amenable number.

340777 is a deficient number, since it is larger than the sum of its proper divisors (1).

340777 is an equidigital number, since it uses as much as digits as its factorization.

340777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4116, while the sum is 28.

The square root of 340777 is about 583.7610812653. The cubic root of 340777 is about 69.8484476310.

The spelling of 340777 in words is "three hundred forty thousand, seven hundred seventy-seven", and thus it is an iban number.