345880445 has 8 divisors (see below), whose sum is σ = 415177944. Its totient is φ = 276623424.

The previous prime is 345880439. The next prime is 345880499. The reversal of 345880445 is 544088543.

It can be written as a sum of positive squares in 4 ways, for example, as 270207844 + 75672601 = 16438^2 + 8699^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 345880445 - 2¹⁰ = 345879421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13847 + ... + 29723.

It is an arithmetic number, because the mean of its divisors is an integer number (51897243).

Almost surely, 2^345880445 is an apocalyptic number.

It is an amenable number.

345880445 is a deficient number, since it is larger than the sum of its proper divisors (69297499).

345880445 is a wasteful number, since it uses less digits than its factorization.

345880445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20239.

The product of its (nonzero) digits is 307200, while the sum is 41.

The square root of 345880445 is about 18597.8613017734. The cubic root of 345880445 is about 701.9540267185.

The spelling of 345880445 in words is "three hundred forty-five million, eight hundred eighty thousand, four hundred forty-five".