349553665 has 8 divisors (see below), whose sum is σ = 429219648. Its totient is φ = 273139440.

The previous prime is 349553647. The next prime is 349553671. The reversal of 349553665 is 566355943.

It is a happy number.

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

It is not a de Polignac number, because 349553665 - 2⁷ = 349553537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 812701 + ... + 813130.

It is an arithmetic number, because the mean of its divisors is an integer number (53652456).

Almost surely, 2^349553665 is an apocalyptic number.

It is an amenable number.

349553665 is a deficient number, since it is larger than the sum of its proper divisors (79665983).

349553665 is a wasteful number, since it uses less digits than its factorization.

349553665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625879.

The product of its digits is 1458000, while the sum is 46.

The square root of 349553665 is about 18696.3543237713. The cubic root of 349553665 is about 704.4301785302.

The spelling of 349553665 in words is "three hundred forty-nine million, five hundred fifty-three thousand, six hundred sixty-five".