340066509 has 8 divisors (see below), whose sum is σ = 454470912. Its totient is φ = 226186560.

The previous prime is 340066483. The next prime is 340066511. The reversal of 340066509 is 905660043.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 340066509 - 2⁸ = 340066253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340066509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340066549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129597 + ... + 132194.

It is an arithmetic number, because the mean of its divisors is an integer number (56808864).

Almost surely, 2^340066509 is an apocalyptic number.

It is an amenable number.

340066509 is a deficient number, since it is larger than the sum of its proper divisors (114404403).

340066509 is a wasteful number, since it uses less digits than its factorization.

340066509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262227.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 340066509 is about 18440.8923048751. The cubic root of 340066509 is about 697.9987116940.

The spelling of 340066509 in words is "three hundred forty million, sixty-six thousand, five hundred nine".