345605807 has 4 divisors (see below), whose sum is σ = 345798456. Its totient is φ = 345413160.

The previous prime is 345605791. The next prime is 345605831. The reversal of 345605807 is 708506543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708506543 = 18229 ⋅38867.

It is a cyclic number.

It is not a de Polignac number, because 345605807 - 2⁴ = 345605791 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 (345605837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93608 + ... + 97229.

It is an arithmetic number, because the mean of its divisors is an integer number (86449614).

Almost surely, 2^345605807 is an apocalyptic number.

345605807 is a deficient number, since it is larger than the sum of its proper divisors (192649).

345605807 is a wasteful number, since it uses less digits than its factorization.

345605807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192648.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 345605807 is about 18590.4762445721. The cubic root of 345605807 is about 701.7681876516.

The spelling of 345605807 in words is "three hundred forty-five million, six hundred five thousand, eight hundred seven".