345665608 has 8 divisors (see below), whose sum is σ = 648123030. Its totient is φ = 172832800.

The previous prime is 345665603. The next prime is 345665623. The reversal of 345665608 is 806566543.

It can be written as a sum of positive squares in only one way, i.e., 309689604 + 35976004 = 17598^2 + 5998^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×345665608³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (345665603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21604093 + ... + 21604108.

Almost surely, 2^345665608 is an apocalyptic number.

It is an amenable number.

345665608 is a deficient number, since it is larger than the sum of its proper divisors (302457422).

345665608 is a wasteful number, since it uses less digits than its factorization.

345665608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43208207 (or 43208203 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The square root of 345665608 is about 18592.0845523034. The cubic root of 345665608 is about 701.8086615270.

The spelling of 345665608 in words is "three hundred forty-five million, six hundred sixty-five thousand, six hundred eight".