340693 has 2 divisors, whose sum is σ = 340694. Its totient is φ = 340692.

The previous prime is 340687. The next prime is 340709. The reversal of 340693 is 396043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223729 + 116964 = 473^2 + 342^2 .

It is an emirp because it is prime and its reverse (396043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340693 - 2⁵ = 340661 is a prime.

340693 is a lucky number.

It is equal to p₂₉₂₃₉ and since 340693 and 29239 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170346 + 170347.

It is an arithmetic number, because the mean of its divisors is an integer number (170347).

2³⁴⁰⁶⁹³ is an apocalyptic number.

It is an amenable number.

340693 is a deficient number, since it is larger than the sum of its proper divisors (1).

340693 is an equidigital number, since it uses as much as digits as its factorization.

340693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 340693 is about 583.6891295887. The cubic root of 340693 is about 69.8427080498.

The spelling of 340693 in words is "three hundred forty thousand, six hundred ninety-three".