346678909 has 12 divisors (see below), whose sum is σ = 376121664. Its totient is φ = 319331264.

The previous prime is 346678907. The next prime is 346678919. The reversal of 346678909 is 909876643.

It is not a de Polignac number, because 346678909 - 2¹ = 346678907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346678901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 822 + ... + 26344.

It is an arithmetic number, because the mean of its divisors is an integer number (31343472).

Almost surely, 2^346678909 is an apocalyptic number.

It is an amenable number.

346678909 is a deficient number, since it is larger than the sum of its proper divisors (29442755).

346678909 is a wasteful number, since it uses less digits than its factorization.

346678909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25604 (or 25587 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 346678909 is about 18619.3154815101. The cubic root of 346678909 is about 702.4937645457.

The spelling of 346678909 in words is "three hundred forty-six million, six hundred seventy-eight thousand, nine hundred nine".