340978633 has 2 divisors, whose sum is σ = 340978634. Its totient is φ = 340978632.

The previous prime is 340978621. The next prime is 340978663. The reversal of 340978633 is 336879043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217946169 + 123032464 = 14763^2 + 11092^2 .

It is a cyclic number.

It is not a de Polignac number, because 340978633 - 2⁵ = 340978601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340978633.

It is not a weakly prime, because it can be changed into another prime (340978663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170489316 + 170489317.

It is an arithmetic number, because the mean of its divisors is an integer number (170489317).

Almost surely, 2^340978633 is an apocalyptic number.

It is an amenable number.

340978633 is a deficient number, since it is larger than the sum of its proper divisors (1).

340978633 is an equidigital number, since it uses as much as digits as its factorization.

340978633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 340978633 is about 18465.6067595950. The cubic root of 340978633 is about 698.6222103240.

The spelling of 340978633 in words is "three hundred forty million, nine hundred seventy-eight thousand, six hundred thirty-three".