345406346 has 4 divisors (see below), whose sum is σ = 518109522. Its totient is φ = 172703172.

The previous prime is 345406343. The next prime is 345406351. The reversal of 345406346 is 643604543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 643604543 = 283 ⋅2274221.

It can be written as a sum of positive squares in only one way, i.e., 218596225 + 126810121 = 14785^2 + 11261^2 .

It is not an unprimeable number, because it can be changed into a prime (345406343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86351585 + ... + 86351588.

Almost surely, 2^345406346 is an apocalyptic number.

345406346 is a deficient number, since it is larger than the sum of its proper divisors (172703176).

345406346 is a wasteful number, since it uses less digits than its factorization.

345406346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172703175.

The product of its (nonzero) digits is 103680, while the sum is 35.

The square root of 345406346 is about 18585.1108686497. The cubic root of 345406346 is about 701.6331568174.

The spelling of 345406346 in words is "three hundred forty-five million, four hundred six thousand, three hundred forty-six".