345656217 has 8 divisors (see below), whose sum is σ = 461303296. Its totient is φ = 230223312.

The previous prime is 345656203. The next prime is 345656219. The reversal of 345656217 is 712656543.

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

It is not a de Polignac number, because 345656217 - 2¹⁵ = 345623449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345656219) 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, 49738 + ... + 56259.

It is an arithmetic number, because the mean of its divisors is an integer number (57662912).

Almost surely, 2^345656217 is an apocalyptic number.

It is an amenable number.

345656217 is a deficient number, since it is larger than the sum of its proper divisors (115647079).

345656217 is a wasteful number, since it uses less digits than its factorization.

345656217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107087.

The product of its digits is 151200, while the sum is 39.

The square root of 345656217 is about 18591.8319968743. The cubic root of 345656217 is about 701.8023059195.

The spelling of 345656217 in words is "three hundred forty-five million, six hundred fifty-six thousand, two hundred seventeen".