345421885 has 8 divisors (see below), whose sum is σ = 414615096. Its totient is φ = 276264960.

The previous prime is 345421859. The next prime is 345421913. The reversal of 345421885 is 588124543.

It can be written as a sum of positive squares in 4 ways, for example, as 26656569 + 318765316 = 5163^2 + 17854^2 .

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

It is not a de Polignac number, because 345421885 - 2²¹ = 343324733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20857 + ... + 33553.

It is an arithmetic number, because the mean of its divisors is an integer number (51826887).

Almost surely, 2^345421885 is an apocalyptic number.

It is an amenable number.

345421885 is a deficient number, since it is larger than the sum of its proper divisors (69193211).

345421885 is a wasteful number, since it uses less digits than its factorization.

345421885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18143.

The product of its digits is 153600, while the sum is 40.

The square root of 345421885 is about 18585.5289136468. The cubic root of 345421885 is about 701.6436782552.

The spelling of 345421885 in words is "three hundred forty-five million, four hundred twenty-one thousand, eight hundred eighty-five".