345120645 has 32 divisors (see below), whose sum is σ = 572239872. Its totient is φ = 177472512.

The previous prime is 345120637. The next prime is 345120647. The reversal of 345120645 is 546021543.

It is not a de Polignac number, because 345120645 - 2³ = 345120637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345120647) 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 31 ways as a sum of consecutive naturals, for example, 59964 + ... + 65466.

It is an arithmetic number, because the mean of its divisors is an integer number (17882496).

Almost surely, 2^345120645 is an apocalyptic number.

It is an amenable number.

345120645 is a deficient number, since it is larger than the sum of its proper divisors (227119227).

345120645 is a wasteful number, since it uses less digits than its factorization.

345120645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5661.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 345120645 is about 18577.4229913624. The cubic root of 345120645 is about 701.4396527592.

The spelling of 345120645 in words is "three hundred forty-five million, one hundred twenty thousand, six hundred forty-five".