340644077 has 2 divisors, whose sum is σ = 340644078. Its totient is φ = 340644076.

The previous prime is 340644049. The next prime is 340644119. The reversal of 340644077 is 770446043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323496196 + 17147881 = 17986^2 + 4141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340644077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340644047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170322038 + 170322039.

It is an arithmetic number, because the mean of its divisors is an integer number (170322039).

Almost surely, 2^340644077 is an apocalyptic number.

It is an amenable number.

340644077 is a deficient number, since it is larger than the sum of its proper divisors (1).

340644077 is an equidigital number, since it uses as much as digits as its factorization.

340644077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 35.

The square root of 340644077 is about 18456.5456410456. The cubic root of 340644077 is about 698.3936478734.

The spelling of 340644077 in words is "three hundred forty million, six hundred forty-four thousand, seventy-seven".