340645901 has 2 divisors, whose sum is σ = 340645902. Its totient is φ = 340645900.

The previous prime is 340645897. The next prime is 340645931. The reversal of 340645901 is 109546043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336685801 + 3960100 = 18349^2 + 1990^2 .

It is a cyclic number.

It is not a de Polignac number, because 340645901 - 2² = 340645897 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340645931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170322950 + 170322951.

It is an arithmetic number, because the mean of its divisors is an integer number (170322951).

Almost surely, 2^340645901 is an apocalyptic number.

It is an amenable number.

340645901 is a deficient number, since it is larger than the sum of its proper divisors (1).

340645901 is an equidigital number, since it uses as much as digits as its factorization.

340645901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 340645901 is about 18456.5950543430. The cubic root of 340645901 is about 698.3948944020.

The spelling of 340645901 in words is "three hundred forty million, six hundred forty-five thousand, nine hundred one".