345021611 has 16 divisors (see below), whose sum is σ = 380485248. Its totient is φ = 310262400.

The previous prime is 345021571. The next prime is 345021629. The reversal of 345021611 is 116120543.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345021611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345021011) 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, 603956 + ... + 604526.

It is an arithmetic number, because the mean of its divisors is an integer number (23780328).

Almost surely, 2^345021611 is an apocalyptic number.

345021611 is a deficient number, since it is larger than the sum of its proper divisors (35463637).

345021611 is a wasteful number, since it uses less digits than its factorization.

345021611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 345021611 is about 18574.7573604610. The cubic root of 345021611 is about 701.3725525329.

The spelling of 345021611 in words is "three hundred forty-five million, twenty-one thousand, six hundred eleven".