345034985 has 4 divisors (see below), whose sum is σ = 414041988. Its totient is φ = 276027984.

The previous prime is 345034981. The next prime is 345034999. The reversal of 345034985 is 589430543.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58308496 + 286726489 = 7636^2 + 16933^2 .

It is a cyclic number.

It is not a de Polignac number, because 345034985 - 2² = 345034981 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (345034981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34503494 + ... + 34503503.

It is an arithmetic number, because the mean of its divisors is an integer number (103510497).

Almost surely, 2^345034985 is an apocalyptic number.

It is an amenable number.

345034985 is a deficient number, since it is larger than the sum of its proper divisors (69007003).

345034985 is an equidigital number, since it uses as much as digits as its factorization.

345034985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69007002.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 345034985 is about 18575.1173616750. The cubic root of 345034985 is about 701.3816148012.

The spelling of 345034985 in words is "three hundred forty-five million, thirty-four thousand, nine hundred eighty-five".