346445405 has 8 divisors (see below), whose sum is σ = 420406200. Its totient is φ = 274041856.

The previous prime is 346445401. The next prime is 346445461. The reversal of 346445405 is 504544643.

It can be written as a sum of positive squares in 4 ways, for example, as 1006009 + 345439396 = 1003^2 + 18586^2 .

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 346445405 - 2² = 346445401 is a prime.

It is a super-2 number, since 2×346445405² = 240048837291228050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346445401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388820 + ... + 389709.

It is an arithmetic number, because the mean of its divisors is an integer number (52550775).

Almost surely, 2^346445405 is an apocalyptic number.

It is an amenable number.

346445405 is a deficient number, since it is larger than the sum of its proper divisors (73960795).

346445405 is an equidigital number, since it uses as much as digits as its factorization.

346445405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778623.

The product of its (nonzero) digits is 115200, while the sum is 35.

The square root of 346445405 is about 18613.0439477266. The cubic root of 346445405 is about 702.3360086301.

The spelling of 346445405 in words is "three hundred forty-six million, four hundred forty-five thousand, four hundred five".