346118561 has 4 divisors (see below), whose sum is σ = 348844032. Its totient is φ = 343393092.

The previous prime is 346118557. The next prime is 346118569. The reversal of 346118561 is 165811643.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 346118561 - 2² = 346118557 is a prime.

It is a super-3 number, since 3×346118561³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (346118569) 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, 1362545 + ... + 1362798.

It is an arithmetic number, because the mean of its divisors is an integer number (87211008).

Almost surely, 2^346118561 is an apocalyptic number.

It is an amenable number.

346118561 is a deficient number, since it is larger than the sum of its proper divisors (2725471).

346118561 is a wasteful number, since it uses less digits than its factorization.

346118561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725470.

The product of its digits is 17280, while the sum is 35.

The square root of 346118561 is about 18604.2619041982. The cubic root of 346118561 is about 702.1150728696.

It can be divided in two parts, 3461 and 18561, that added together give a palindrome (22022).

The spelling of 346118561 in words is "three hundred forty-six million, one hundred eighteen thousand, five hundred sixty-one".