340688377 has 2 divisors, whose sum is σ = 340688378. Its totient is φ = 340688376.

The previous prime is 340688363. The next prime is 340688401. The reversal of 340688377 is 773886043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 293642496 + 47045881 = 17136^2 + 6859^2 .

It is a cyclic number.

It is not a de Polignac number, because 340688377 - 2²³ = 332299769 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340628377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170344188 + 170344189.

It is an arithmetic number, because the mean of its divisors is an integer number (170344189).

Almost surely, 2^340688377 is an apocalyptic number.

It is an amenable number.

340688377 is a deficient number, since it is larger than the sum of its proper divisors (1).

340688377 is an equidigital number, since it uses as much as digits as its factorization.

340688377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 46.

The square root of 340688377 is about 18457.7457182615. The cubic root of 340688377 is about 698.4239214049.

The spelling of 340688377 in words is "three hundred forty million, six hundred eighty-eight thousand, three hundred seventy-seven".