345172617 has 16 divisors (see below), whose sum is σ = 511888000. Its totient is φ = 229880592.

The previous prime is 345172613. The next prime is 345172621. The reversal of 345172617 is 716271543.

It is a happy number.

345172617 is a `hidden beast` number, since 34 + 5 + 1 + 7 + 2 + 617 = 666.

It is an interprime number because it is at equal distance from previous prime (345172613) and next prime (345172621).

It is not a de Polignac number, because 345172617 - 2² = 345172613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345172613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22884 + ... + 34842.

It is an arithmetic number, because the mean of its divisors is an integer number (31993000).

Almost surely, 2^345172617 is an apocalyptic number.

It is an amenable number.

345172617 is a deficient number, since it is larger than the sum of its proper divisors (166715383).

345172617 is a wasteful number, since it uses less digits than its factorization.

345172617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13037 (or 13031 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 345172617 is about 18578.8217333608. The cubic root of 345172617 is about 701.4748611154.

The spelling of 345172617 in words is "three hundred forty-five million, one hundred seventy-two thousand, six hundred seventeen".